在Ubuntu上启动apache时出错

当我尝试启动它时: sudo service apache2 restart

我有这个错误

Job for apache2.service failed because the control process exited with error code. See "systemctl status apache2.service" and "journalctl -xe" for details.

我执行:

 systemctl status apache2.service apache2.service - LSB: Apache2 web server Loaded: loaded (/etc/init.d/apache2; bad; vendor preset: enabled) Drop-In: /lib/systemd/system/apache2.service.d └─apache2-systemd.conf Active: failed (Result: exit-code) since Thu 2017-09-21 12:00:01 CDT; 17min ago Docs: man:systemd-sysv-generator(8) Process: 29018 ExecStart=/etc/init.d/apache2 start (code=exited, status=1/FAILURE) Tasks: 13 Memory: 497.0M CPU: 72ms CGroup: /system.slice/apache2.service ├─1478 /usr/bin/newrelic-daemon --agent --pidfile /var/run/newrelic-daemon.pid --logfile /var/log/newrel └─1486 /usr/bin/newrelic-daemon --agent --pidfile /var/run/newrelic-daemon.pid --logfile /var/log/newrel 

什么可能是错的?