[Wed Dec 07 20:32:52.601247 2016] [core:warn] [pid 20027] AH00111: Config variable ${APACHE_LOCK_DIR} is not defined
[Wed Dec 07 20:32:52.601295 2016] [core:warn] [pid 20027] AH00111: Config variable ${APACHE_PID_FILE} is not defined
[Wed Dec 07 20:32:52.601306 2016] [core:warn] [pid 20027] AH00111: Config variable ${APACHE_RUN_USER} is not defined
[Wed Dec 07 20:32:52.601318 2016] [core:warn] [pid 20027] AH00111: Config variable ${APACHE_RUN_GROUP} is not defined
[Wed Dec 07 20:32:52.601330 2016] [core:warn] [pid 20027] AH00111: Config variable ${APACHE_LOG_DIR} is not defined
[Wed Dec 07 20:32:52.606605 2016] [core:warn] [pid 20027] AH00111: Config variable ${APACHE_RUN_DIR} is not defined
[Wed Dec 07 20:32:52.606803 2016] [core:warn] [pid 20027] AH00111: Config variable ${APACHE_LOG_DIR} is not defined
[Wed Dec 07 20:32:52.606926 2016] [core:warn] [pid 20027] AH00111: Config variable ${APACHE_LOG_DIR} is not defined
[Wed Dec 07 20:32:52.606952 2016] [core:warn] [pid 20027] AH00111: Config variable ${APACHE_LOG_DIR} is not defined
[Wed Dec 07 20:32:52.606982 2016] [core:warn] [pid 20027] AH00111: Config variable ${APACHE_LOG_DIR} is not defined
[Wed Dec 07 20:32:52.606990 2016] [core:warn] [pid 20027] 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}