*Solved* Apache fails to start (Ubuntu 16.04) no error.log

I dont know exactly how, but its solved… maybe reinstalling libapache2-mod-php7.0 has helped

As in Title Apache2 crashes and theres no logging in the error.log, not even after setting the Loglevel to debug in the apache2.conf.

Owner of the error.log is root

No Updates or Changes were made on the Server

Tried to Downgrade from Apache (apt-get install --reinstall apache2=2.4.18-2ubuntu3 apache2-bin=2.4.18-2ubuntu3 apache2-data=2.4.18-2ubuntu3) but that doesnt help.

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

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 Tue 2017-04-04 16:06:03 UTC; 1min 26s ago
Docs: man:systemd-sysv-generator(8)
Process: 11071 ExecStart=/etc/init.d/apache2 start (code=exited, status=1/FAILURE)

Apr 04 16:05:43 bpi-iot-ros systemd[1]: Starting LSB: Apache2 web server…
Apr 04 16:05:43 bpi-iot-ros apache2[11071]: * Starting Apache httpd web server apache2
Apr 04 16:06:03 bpi-iot-ros apache2[11071]: *
Apr 04 16:06:03 bpi-iot-ros apache2[11071]: * The apache2 instance did not start within 20 seconds. Please read the log files to discover problems
Apr 04 16:06:03 bpi-iot-ros systemd[1]: apache2.service: Control process exited, code=exited status=1
Apr 04 16:06:03 bpi-iot-ros systemd[1]: Failed to start LSB: Apache2 web server.
Apr 04 16:06:03 bpi-iot-ros systemd[1]: apache2.service: Unit entered failed state.
Apr 04 16:06:03 bpi-iot-ros systemd[1]: apache2.service: Failed with result ‘exit-code’.

● service.service
Loaded: not-found (Reason: No such file or directory)
Active: inactive (dead)

journalctl -xe:
Apr 04 16:09:22 bpi-iot-ros apache2[11191]: *
Apr 04 16:09:22 bpi-iot-ros apache2[11191]: * The apache2 instance did not start within 20 seconds. Please read the log files to discover problems
Apr 04 16:09:22 bpi-iot-ros systemd[1]: apache2.service: Control process exited, code=exited status=1
Apr 04 16:09:22 bpi-iot-ros systemd[1]: Failed to start LSB: Apache2 web server.
– Subject: Unit apache2.service has failed
– Defined-By: systemd
– Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel

– Unit apache2.service has failed.

– The result is failed.
Apr 04 16:09:22 bpi-iot-ros systemd[1]: apache2.service: Unit entered failed state.
Apr 04 16:09:22 bpi-iot-ros systemd[1]: apache2.service: Failed with result ‘exit-code’.

Error log, last lines from Monday:
[Mon Apr 03 08:56:07.530514 2017] [:error] [pid 30594] [client 192.168.2.185:52276] PHP Fatal error: Uncaught Doctrine\DBAL\DBALException: Failed to connect to the database: An exception occured in driver: SQLSTATE[HY000] [2002] No such file or directory in /var/www/nextcloud/lib/private/DB/Connection.php:60\nStack trace:\n#0 /var/www/nextcloud/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(429): OC\DB\Connection->connect()\n#1 /var/www/nextcloud/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(389): Doctrine\DBAL\Connection->getDatabasePlatformVersion()\n#2 /var/www/nextcloud/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(328): Doctrine\DBAL\Connection->detectDatabasePlatform()\n#3 /var/www/nextcloud/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(621): Doctrine\DBAL\Connection->getDatabasePlatform()\n#4 /var/www/nextcloud/lib/private/DB/Connection.php(147): Doctrine\DBAL\Connection->setTransactionIsolation(2)\n#5 /var/www/nextcloud/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/DriverManager.php(172): OC\DB\Connection->__construct(Array, Object(Doctrine\DBAL\Driver\PDOMySql\Driver), Obj in /var/www/nextcloud/lib/private/DB/Connection.php on line 60
[Mon Apr 03 08:56:12.034222 2017] [mpm_prefork:notice] [pid 625] AH00169: caught SIGTERM, shutting down

Thanks for Reading, i hope you got any Ideas

Edit: apachectl configtest no Syntax errors.

Child Process seems to hang up, can reach the SSL Warning when starting apache2ctl -X