`react-native run-ios` mengembalikan Kesalahan: Tidak dapat menemukan simulator iPhone X.

setiap kali saya lari react-native run-ios, saya mengerti

Could not find iPhone X simulator

Error: Could not find iPhone X simulator
    at resolve (calendarPractice/node_modules/react-native/local-cli/runIOS/runIOS.js:149:13)
    at new Promise (<anonymous>)
    at runOnSimulator (calendarPractice/node_modules/react-native/local-cli/runIOS/runIOS.js:134:10)
    at Object.runIOS [as func] (calendarPractice/node_modules/react-native/local-cli/runIOS/runIOS.js:106:12)
    at Promise.resolve.then (calendarPractice/node_modules/react-native/local-cli/cliEntry.js:117:22)

Namun, ketika saya menjalankan Xcode, itu berfungsi dengan baik

{
  "devicetypes" : [
    {
      "name" : "iPhone 4s",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone 4s.simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-4s"
    },
    {
      "name" : "iPhone 5",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone 5.simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-5"
    },
    {
      "name" : "iPhone 5s",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone 5s.simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-5s"
    },
    {
      "name" : "iPhone 6",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone 6.simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-6"
    },
    {
      "name" : "iPhone 6 Plus",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone 6 Plus.simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-6-Plus"
    },
    {
      "name" : "iPhone 6s",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone 6s.simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-6s"
    },
    {
      "name" : "iPhone 6s Plus",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone 6s Plus.simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-6s-Plus"
    },
    {
      "name" : "iPhone 7",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone 7.simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-7"
    },
    {
      "name" : "iPhone 7 Plus",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone 7 Plus.simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-7-Plus"
    },
    {
      "name" : "iPhone 8",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone 8.simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-8"
    },
    {
      "name" : "iPhone 8 Plus",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone 8 Plus.simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-8-Plus"
    },
    {
      "name" : "iPhone SE",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone SE.simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-SE"
    },
    {
      "name" : "iPhone X",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone X.simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-X"
    },
    {
      "name" : "iPhone Xs",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone Xs.simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-XS"
    },
    {
      "name" : "iPhone Xs Max",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone Xs Max.simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-XS-Max"
    },
    {
      "name" : "iPhone Xʀ",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPhone Xʀ.simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.iPhone-XR"
    },
    {
      "name" : "iPad 2",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPad 2.simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.iPad-2"
    },
    {
      "name" : "iPad Retina",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPad Retina.simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.iPad-Retina"
    },
    {
      "name" : "iPad Air",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPad Air.simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.iPad-Air"
    },
    {
      "name" : "iPad Air 2",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPad Air 2.simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.iPad-Air-2"
    },
    {
      "name" : "iPad (5th generation)",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPad (5th generation).simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.iPad--5th-generation-"
    },
    {
      "name" : "iPad Pro (9.7-inch)",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPad Pro (9.7-inch).simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.iPad-Pro--9-7-inch-"
    },
    {
      "name" : "iPad Pro (12.9-inch)",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPad Pro (12.9-inch).simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.iPad-Pro"
    },
    {
      "name" : "iPad Pro (12.9-inch) (2nd generation)",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPad Pro (12.9-inch) (2nd generation).simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.iPad-Pro--12-9-inch---2nd-generation-"
    },
    {
      "name" : "iPad Pro (10.5-inch)",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPad Pro (10.5-inch).simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.iPad-Pro--10-5-inch-"
    },
    {
      "name" : "iPad (6th generation)",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPad (6th generation).simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.iPad--6th-generation-"
    },
    {
      "name" : "iPad Pro (11-inch)",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPad Pro (11-inch).simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.iPad-Pro--11-inch-"
    },
    {
      "name" : "iPad Pro (12.9-inch) (3rd generation)",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/iPad Pro (12.9-inch) (3rd generation).simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.iPad-Pro--12-9-inch---3rd-generation-"
    },
    {
      "name" : "Apple TV",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/AppleTVOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/Apple TV.simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.Apple-TV-1080p"
    },
    {
      "name" : "Apple TV 4K",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/AppleTVOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/Apple TV 4K.simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.Apple-TV-4K-4K"
    },
    {
      "name" : "Apple TV 4K (at 1080p)",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/AppleTVOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/Apple TV 4K (at 1080p).simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.Apple-TV-4K-1080p"
    },
    {
      "name" : "Apple Watch - 38mm",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/WatchOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/Apple Watch - 38mm.simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.Apple-Watch-38mm"
    },
    {
      "name" : "Apple Watch - 42mm",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/WatchOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/Apple Watch - 42mm.simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.Apple-Watch-42mm"
    },
    {
      "name" : "Apple Watch Series 2 - 38mm",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/WatchOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/Apple Watch Series 2 - 38mm.simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.Apple-Watch-Series-2-38mm"
    },
    {
      "name" : "Apple Watch Series 2 - 42mm",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/WatchOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/Apple Watch Series 2 - 42mm.simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.Apple-Watch-Series-2-42mm"
    },
    {
      "name" : "Apple Watch Series 3 - 38mm",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/WatchOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/Apple Watch Series 3 - 38mm.simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.Apple-Watch-Series-3-38mm"
    },
    {
      "name" : "Apple Watch Series 3 - 42mm",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/WatchOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/Apple Watch Series 3 - 42mm.simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.Apple-Watch-Series-3-42mm"
    },
    {
      "name" : "Apple Watch Series 4 - 40mm",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/WatchOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/Apple Watch Series 4 - 40mm.simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.Apple-Watch-Series-4-40mm"
    },
    {
      "name" : "Apple Watch Series 4 - 44mm",
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/WatchOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/DeviceTypes\/Apple Watch Series 4 - 44mm.simdevicetype",
      "identifier" : "com.apple.CoreSimulator.SimDeviceType.Apple-Watch-Series-4-44mm"
    }
  ],
  "runtimes" : [
    {
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/Runtimes\/iOS.simruntime",
      "availabilityError" : "",
      "buildversion" : "16B91",
      "availability" : "(available)",
      "isAvailable" : true,
      "identifier" : "com.apple.CoreSimulator.SimRuntime.iOS-12-1",
      "version" : "12.1",
      "name" : "iOS 12.1"
    },
    {
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/AppleTVOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/Runtimes\/tvOS.simruntime",
      "availabilityError" : "",
      "buildversion" : "16J602",
      "availability" : "(available)",
      "isAvailable" : true,
      "identifier" : "com.apple.CoreSimulator.SimRuntime.tvOS-12-1",
      "version" : "12.1",
      "name" : "tvOS 12.1"
    },
    {
      "bundlePath" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/WatchOS.platform\/Developer\/Library\/CoreSimulator\/Profiles\/Runtimes\/watchOS.simruntime",
      "availabilityError" : "",
      "buildversion" : "16R591",
      "availability" : "(available)",
      "isAvailable" : true,
      "identifier" : "com.apple.CoreSimulator.SimRuntime.watchOS-5-1",
      "version" : "5.1",
      "name" : "watchOS 5.1"
    }
  ],
  "devices" : {
    "com.apple.CoreSimulator.SimRuntime.watchOS-5-1" : [
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "Apple Watch Series 2 - 38mm",
        "udid" : "01AFDEF7-63B6-465C-A02A-44EE4A07EABA",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "Apple Watch Series 2 - 42mm",
        "udid" : "BE62C985-DEE2-46EC-8962-A582D537EEE0",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "Apple Watch Series 3 - 38mm",
        "udid" : "078BF157-30FA-41D1-94FA-6B1686E03085",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "Apple Watch Series 3 - 42mm",
        "udid" : "E4CE652E-0185-4C59-B965-BED5FCEE7C76",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "Apple Watch Series 4 - 40mm",
        "udid" : "6621323A-A9DE-4BCB-AC97-54C8C33B0158",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "Apple Watch Series 4 - 44mm",
        "udid" : "D89037A3-66A0-43C1-90BA-E7C76CA0D724",
        "availabilityError" : ""
      }
    ],
    "com.apple.CoreSimulator.SimRuntime.tvOS-12-1" : [
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "Apple TV",
        "udid" : "AFAA21B8-BD4A-45EA-B0FF-E9915FE9B926",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "Apple TV 4K",
        "udid" : "EBB88F2E-CFFE-4981-A736-7A7C0B85643D",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "Apple TV 4K (at 1080p)",
        "udid" : "F0B73E8A-986E-447E-B37A-2F46096DEFF6",
        "availabilityError" : ""
      }
    ],
    "com.apple.CoreSimulator.SimRuntime.iOS-12-1" : [
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "iPhone 5s",
        "udid" : "F870B7FA-6DDA-4336-89AD-68A402844188",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "iPhone 5s",
        "udid" : "6627ADE5-F8C1-4AE5-BD6F-3AEDDC0B7B63",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "iPhone 6",
        "udid" : "05574997-ACAD-40CA-A3D7-5624D53F00FA",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "iPhone 6 Plus",
        "udid" : "93237078-CA6D-4F97-93F9-779809700018",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "iPhone 6s",
        "udid" : "9B50FE18-4F49-4EA4-80F0-DF498A667D33",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "iPhone 6s Plus",
        "udid" : "D4640B6D-97DC-4CA1-BE63-C5403159A3D4",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "iPhone 7",
        "udid" : "6E9EEC00-3291-42B4-B04A-BA3487F9CD5F",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "iPhone 7 Plus",
        "udid" : "6DA1C3CF-1D1F-4DEF-9B74-2C40D5FB5881",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "iPhone 8",
        "udid" : "E19386B9-469A-450B-9CD2-B4FE8687DCF9",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "iPhone 8 Plus",
        "udid" : "6D36DF76-8ED9-41A2-9E1A-0BA48B92C26E",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "iPhone SE",
        "udid" : "EE4818DF-F817-4441-8A1C-BE1B99303E10",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "iPhone X",
        "udid" : "85B78A8F-C32B-4493-BDD1-65ECA3F77C86",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "iPhone X",
        "udid" : "CA12C337-4F66-4C6C-ACE5-7F7EACCBC39A",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "iPhone XS",
        "udid" : "8BBCE315-2F4C-4132-8E53-28AF52401C8E",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "iPhone XS Max",
        "udid" : "4E77C62F-AB1F-4EDE-839B-53F70CAFC79E",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "iPhone XR",
        "udid" : "28D12ABE-3355-4862-960A-0FE5FFE41C7B",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "iPad Air",
        "udid" : "94485C88-BCEB-456A-95DC-5F8C3DA8D181",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "iPad Air 2",
        "udid" : "CF2C787D-A378-4AB9-B334-F7B24E94AF4D",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "iPad (5th generation)",
        "udid" : "DFE602A5-EC68-4585-8AB0-C045A9843D29",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "iPad Pro (9.7-inch)",
        "udid" : "5A3F3EAC-F788-49F1-A753-5D34A9990F0B",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "iPad Pro (12.9-inch)",
        "udid" : "EF6EBE34-0A85-4FF0-8A45-7BA418A0CC0C",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "iPad Pro (12.9-inch) (2nd generation)",
        "udid" : "FBA940F8-FD85-4D5E-A570-EB4F3A56E1F9",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "iPad Pro (10.5-inch)",
        "udid" : "8AE4AAED-ECE0-4984-9679-8D3022064692",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "iPad (6th generation)",
        "udid" : "1121363D-EF49-4AC0-9E46-5C30318A24A2",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "iPad Pro (11-inch)",
        "udid" : "038FECC0-8711-46E3-B601-8F88F2F4AD7D",
        "availabilityError" : ""
      },
      {
        "availability" : "(available)",
        "state" : "Shutdown",
        "isAvailable" : true,
        "name" : "iPad Pro (12.9-inch) (3rd generation)",
        "udid" : "12DC911F-2F45-4767-BC1A-6F1D0C8D9F3D",
        "availabilityError" : ""
      }
    ]
  },
  "pairs" : {
    "C9B69F4A-6A9D-44F3-A6BC-56BFA2F8B83F" : {
      "watch" : {
        "name" : "Apple Watch Series 4 - 44mm",
        "udid" : "D89037A3-66A0-43C1-90BA-E7C76CA0D724",
        "state" : "Shutdown"
      },
      "phone" : {
        "name" : "iPhone XS Max",
        "udid" : "4E77C62F-AB1F-4EDE-839B-53F70CAFC79E",
        "state" : "Shutdown"
      },
      "state" : "(active, disconnected)"
    },
    "5327B65F-29E7-42D0-9861-FF31428F3218" : {
      "watch" : {
        "name" : "Apple Watch Series 4 - 40mm",
        "udid" : "6621323A-A9DE-4BCB-AC97-54C8C33B0158",
        "state" : "Shutdown"
      },
      "phone" : {
        "name" : "iPhone XS",
        "udid" : "8BBCE315-2F4C-4132-8E53-28AF52401C8E",
        "state" : "Shutdown"
      },
      "state" : "(active, disconnected)"
    }
  }

Diedit: Saya menyalin bagian perangkat Anda dari JSON keluaran Anda dan menyematkannya ke milik saya /node_modules/react-native/local-cli/runIOS/runIOS.js

function runOnSimulator(xcodeProject, args, scheme) {
return new Promise(resolve => {
    try {
        var simulators = {devices section of your json}; //Here
    } catch (e) {
        console.log("e", e);
        throw new Error('Could not parse the simulator list output');
    }

    const selectedSimulator = findMatchingSimulator(simulators, args.simulator);
    console.log("selected", selectedSimulator);
    if (!selectedSimulator) {
        throw new Error(`Could not find ${args.simulator} simulator`);
    }
    ...

Dan akhirnya, itu memberikan kesalahan yang sama seperti milik Anda. Jadi saya menemukan bahwa versi parsing perangkat berbeda. Di perangkat Anda, versinya adalah;

"com.apple.CoreSimulator.SimRuntime.tvOS-12-1" //for tvOS
"com.apple.CoreSimulator.SimRuntime.iOS-12-1" // for iOS

tetapi dalam react-native memeriksa nilai versi ini seperti ini ( /node_modules/react-native/local-cli/runIOS/findMatchingSimulator.js);

// Making sure the version of the simulator is an iOS or tvOS (Removes Apple Watch, etc)
if (!version.startsWith('iOS') && !version.startsWith('tvOS')) {
    continue;
}

Jadi react-native tidak bisa mengenali.
Jika kita mengubah kode ini dengan ini;

// Making sure the version of the simulator is an iOS or tvOS (Removes Apple Watch, etc)
if (!version.startsWith('com.apple.CoreSimulator.SimRuntime.iOS') && !version.startsWith('com.apple.CoreSimulator.SimRuntime.tvOS')) {
    continue;
}

masalah terselesaikan. Saya memeriksanya dengan data JSON Anda di komputer saya dan berhasil.

Untuk memperbaiki kesalahan ini, cukup instal ulang modul project & node menggunakan npm

npm install

Kemudian akan muncul daftar peringatan, dan untuk memperbaikinya gunakan perintah berikut:

npm audit fix

Ini harus memperbaiki semuanya, dan memungkinkan Anda menjalankan emulator iOS react-native run-ios

MASALAH

Jika Anda mencoba ini dengan Xcode terbaru (11), tidak ada iPhone X!

Jalankan Simulator dengan sendirinya, di menu atas, lihat di bawah Perangkat Keras, Perangkat, iOS 13.0. Anda akan melihat ada:

• iPhone 8
• iPhone 8 Plus
• iPhone XS
• iPhone XS Max
• iPhone XR
• ... dan beberapa iPad

Saat Anda mengeksekusi run-ios, react-native dirancang agar sesuai dengan perangkat yang diminta.

Default kode keras internal adalah iPhone X.

Fungsi yang mencoba untuk mencocokkan perangkat yang diminta ada di:

/node_modules/@react-native-community/cli-platform-ios/build/commands/runIOS/findMatchingSimulator.js

Fungsi ini dirancang agar Anda dapat memberinya perangkat, dan nomor versi opsional.

Jika perangkat dan versi yang diberikan tidak dapat ditemukan, itu akan mengembalikan kecocokan menggunakan perangkat pertama dalam daftar secara default.

Tapi ... pada kenyataannya, perangkat pertama adalah jam tangan, dan jam tangan apa pun dikecualikan dari pencocokan, jadi fungsi ini akan mengembalikan null.

SOLUSI 1 - Gunakan perangkat Xcode yang ada

Jalankan Simulator dengan sendirinya, seperti dijelaskan di atas, dan catat iPhone atau iPad mana yang Anda inginkan.

Kemudian berikan nama ini sebagai argumen opsional perintah baris perintah run-ios sebagai berikut:

react-native run-ios --simulator="iPhone 8"

SOLUSI 2 - Tambahkan Perangkat iOS Xcode Baru

Menurut Catatan Rilis Xcode 11 :

"Xcode tidak lagi membuat setiap perangkat simulator iOS yang tersedia secara default. Sebaliknya satu set perangkat yang paling umum digunakan dibuat. Untuk membuat perangkat lain - atau beberapa contoh perangkat - buka jendela Perangkat, pilih Simulator, klik tombol +, masukkan nama, dan pilih jenis perangkat dan versi OS yang relevan. Di Terminal, jalankan perintah xcrun simctl create, misalnya xcrun simctl create "My iPhone 7" "iPhone 7" iOS13.0. (49428617) "

Di Xcode, Anda perlu menambahkan perangkat baru yang disebut "iPhone X".

Juga saya jawab di sini: React Native Issue # 2328

Perbaikan sementara:

Langkah 1 : Buka file/node_modules/react-native/local-cli/runIOS/findMatchingSimulator.js

Langkah 2 : Ubah baris kode, dari ini:

if (!version.startsWith('iOS') && !version.startsWith('tvOS')) {
  continue;
}

untuk ini:

if (!version.startsWith('com.apple.CoreSimulator.SimRuntime.iOS') && !version.startsWith('com.apple.CoreSimulator.SimRuntime.tvOS')) {
  continue;
}

Langkah 3 : Jalankan react-native run-ios(Anda mungkin perlu menjalankannya dua kali, dan jangan lupa untuk mematikan Metro Bundler [konsol yang berjalan di latar belakang] jika dijalankan dari versi sebelumnya yang gagal!)

Masalahnya adalah setelah pembaruan ke Xcode - ruang nama simulator ditambahkan ke daftar versi perangkat. Build React Native tidak mengharapkan namespace ini - oleh karena itu build break.

setelah update ke Xcode 11 xcrun mengembalikan true atau false dan tidak YES atau NO seperti sebelumnya.

goto /node_modules/react-native/local-cli/runIOS/findMatchingSimulator.js dan di

Temukan

if (
   simulator.availability !== '(available)' &&
   simulator.isAvailable !== 'YES'
 ) {
  continue;
}

dan mengubahnya menjadi

if (
   simulator.availability !== '(available)' &&
   simulator.isAvailable !== true
 ) {
  continue;
}

Tidak ada simulator iPhone X di mesin Anda, kemungkinan besar karena Anda memperbarui Xcode. Anda cukup memberikan nama simulator yang tersedia seperti di bawah ini:

react-native run-ios --simulator="iPhone 11"

Untuk memeriksa simulator yang tersedia, Anda dapat membuka Xcode dan memeriksa daftar perangkat seperti yang ditunjukkan di bawah ini:

Buka file /node_modules/react-native/local-cli/runIOS/findMatchingSimulator.js

! version.startsWith ('iOS') ->! version. termasuk ('iOS')

Setelah saya memperbarui Xcode ke versi 11, saya mengalami masalah yang sama.

Solusinya adalah menambahkan simulator iPhone X ke dalam daftar Anda.

• Pilih simulator -> Hardware -> Kelola Perangkat (Anda akan melihat munculan)

• Pilih "Simulators" -> (pojok kiri bawah) + (ikon plus, di sebelah "Filter") lalu tambahkan simulator baru,

• Nama Simulator: Jenis Perangkat iPhone X: Pilih iPhone X.

Itu berhasil untuk saya

Saya juga tidak memasang iPhone X sebagai simulator di Xcode. Yang harus saya lakukan hanyalah menambahkan iPhone X sebagai simulator baru di Xcode dan semuanya baik-baik saja.

Di Xcode: Pergi ke Windowlalu Devices and Simulators. Klik tab simulator. Klik +tombol di sudut kiri bawah dan tambahkan iPhone X.

Saya harap perbaikan ini semudah bagi Anda seperti bagi saya.

dalam kasus saya, saya menjalankan skrip: sed -i '' 's / beginWith / include / g' node_modules / react-native / local-cli / runIOS / findMatchingSimulator.js dan berhasil. juga cocok untuk orang yang tidak dapat memperbarui react-native

Untuk Xcode 11.2 dan iOS 13.2 berikut adalah perubahan yang telah saya lakukan untuk menjalankan aplikasi di simulator

di findMatchingSimulator.js

baris 43:

if (!version.startsWith('iOS') && !version.startsWith('tvOS')) {

untuk

if (!version.includes('iOS') && !version.includes('tvOS')) {

baris

baris 52

if (
    simulator.availability !== '(available)' &&
    simulator.isAvailable !== 'YES'
  ) {
    continue;
  }

untuk

if (
    simulator.isAvailable != true
  ) {
    continue;
  }

PS

Hari pertama iklan proyek React sudah dimulai! (tidak)

Masalah saya adalah simulator iPhone X tidak terpasang

Anda dapat memeriksa dengan apa simulator dipasang

xcrun simctl list devices | grep iPhone | grep -v unavailable | cut -d'(' -f1

Lalu lari

react-native run-ios --simulator="iPhone Xs"

jika tidak dapat ditemukan simulator masih tetap ada setelah mengganti baris kode berikut di runSimulator.js.

Jalur untuk runSimulator.js -> /node_modules/react-native/local-cli/runIOS/findMatchingSimulator.js

if (!version.startsWith('iOS') && !version.startsWith('tvOS')) { continue; }

dengan yang satu ini

if ( !version.startsWith('com.apple.CoreSimulator.SimRuntime.iOS') && !version.startsWith('com.apple.CoreSimulator.SimRuntime.tvOS') ) { continue; }

komentar baris berikut setelah mengganti

if ( simulator.availability !== '(available)' && simulator.isAvailable !== 'YES' ) { continue; }

Ini akan meluncurkan simulator iPhone tanpa masalah apa pun.

dan pendekatan ke-2 setelah memperbarui ke XCode 11

Xcode 11 xcrun mengembalikan true atau false dan bukan YES atau NO untuk properti isAvailable seperti sebelumnya. Anda dapat memeriksanya menggunakan perintah berikut

xcrun simctl list devices --json 

perintah di atas akan mencetak semua perangkat yang tersedia seperti berikut

"com.apple.CoreSimulator.SimRuntime.iOS-12-2" : [
  {
    "state" : "Booted",
    "isAvailable" : true,
    "name" : "iPhone X",
    "udid" : "E53748D1-628B-4A99-A419-4D7AE7CE4745"
  }
]

Gantikan YA dengan benar di kode berikut

if ( simulator.availability !== '(available)' && simulator.isAvailable !== 'YES' ) { continue; }

seperti ini

if ( simulator.availability !== '(available)' && simulator.isAvailable !== true ) { continue; }

perbaikan mudah ...

Xcode -> preferensi -> komponen menginstal ios 12.2 sumulator

perubahan /node_modules/@react-native-community/cli-platform-ios/build/commands/runIOS/index.js

mengajukan

options: [{
    name: '--simulator [string]',
    description: 'Explicitly set simulator to use. Optionally include iOS version between' + 'parenthesis at the end to match an exact version: "iPhone 6 (10.0)"',
    default: 'iPhone X'
  }

untuk

options: [{
    name: '--simulator [string]',
    description: 'Explicitly set simulator to use. Optionally include iOS version between' + 'parenthesis at the end to match an exact version: "iPhone 6 (10.0)"',
    default: 'iPhone 8'
  }

Saya mengalami kesalahan yang sama ketika saya memutakhirkan Xcode 10 saya ke Xcode 11, Tetapi menentukan versi simulator merupakan perbaikan cepat bagi saya.

Pertama daftarkan semua emulator ios yang tersedia dengan

  xcrun simctl list devices | grep iPhone | grep -v unavailable | cut -d'(' -f1

Hasil

Kemudian pilih satu untuk menjalankan react-native, misalnya

 react-native run-ios --simulator='iPhone 11 Pro Max'

Dengan react-native-cli 2.0.1, Anda mungkin ingin mengganti nama simulator Anda. Secara default Xcode akan memberi nama beberapa perangkat dalam format tersebut <DeviceName> (<DeviceSize>). Namun versi CLI ini menafsirkan semua yang ada di dalam tanda kurung sebagai versi iOS.

Saat mencoba menjalankan simulator bernama iPad Pro (10.5-inch), saya bisa menjalankannya hanya dengan mengganti nama simulator menjadiiPad Pro [10.5-inch] .

Anda dapat mengganti nama simulator dengan menggunakan menu aplikasi Simulator Hardware-> Device-> Manage Devices..., dan mengklik kanan salah satu simulator Anda (di Xcode 10.2.1)

Saya menghadapi masalah ketika saya memperbarui Xcode. Semua simulator tidak tersedia / dicopot pemasangannya. Saya menginstalnya lagi.

Dalam kasus saya, saya telah mencoba solusi lain di atas tetapi tidak ada yang berhasil.

Kemudian saya mencoba upgrade bereaksi-asli dari 0.59.5ke 0.59.10maka itu dipecahkan

Saya mengalami masalah ini setelah mencoba meningkatkan React Native dari 0.59.8menjadi 0.59.9.

Ternyata (berdasarkan jawaban di atas), kita perlu memperbarui @react-native-community/climodul:

1. Hapus dari lockfile ( yarn.lockatau package-lock.json)
2. Jalankan yarnatau npm installinstal lagi.

referensi: https://github.com/react-native-community/rn-diff-purge/issues/21#issuecomment-507645945

Bagi saya, saya harus memperbarui React Native ke 0.60 dengan menjalankan npx react-native-git-upgrade.

Saya mengalami masalah yang sama setiap kali saya memperbarui Xcode.
Saya menjalankan perintah ini:

sudo killall -9 com.apple.CoreSimulator.CoreSimulatorService

Lalu aku lari react-native run-ioslagi.

Nyalakan ulang komputer Anda dan jalankan perintah lagi.