hai setiap orang setelah instalasi bersih ubuntu 16.04 dan lampu tasksel apache2 mendapat kesalahan ini:
[Mon Jul 18 22:42:00.114578 2016] [core:warn] [pid 4654] AH00111: Config variable ${APACHE_LOCK_DIR} is not defined
[Mon Jul 18 22:42:00.114623 2016] [core:warn] [pid 4654] AH00111: Config variable ${APACHE_PID_FILE} is not defined
[Mon Jul 18 22:42:00.114641 2016] [core:warn] [pid 4654] AH00111: Config variable ${APACHE_RUN_USER} is not defined
[Mon Jul 18 22:42:00.114645 2016] [core:warn] [pid 4654] AH00111: Config variable ${APACHE_RUN_GROUP} is not defined
[Mon Jul 18 22:42:00.114657 2016] [core:warn] [pid 4654] AH00111: Config variable ${APACHE_LOG_DIR} is not defined
[Mon Jul 18 22:42:00.133748 2016] [core:warn] [pid 4654] AH00111: Config variable ${APACHE_LOG_DIR} is not defined
AH00526: Syntax error on line 74 of /etc/apache2/apache2.conf:
Invalid Mutex directory in argument file:${APACHE_LOCK_DIR}