Hello everyone, i just ran into a Problem with my Koha System. After upgrading the MariaDB from 10.0 to 10.2.14 I have no access to the Server. I can not provide the Version of Koha, but for Apache: ####################################################### Server version: Apache/2.4.18 (Ubuntu) Server built: 2018-04-18T14:53:04 ? 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: active (running) since Fri 2018-05-11 00:05:38 CEST; 5 days ago Docs: man:systemd-sysv-generator(8) Process: 62250 ExecReload=/etc/init.d/apache2 reload (code=exited, status=0/SU CGroup: /system.slice/apache2.service +-47224 /usr/sbin/apache2 -k start +-48517 /usr/sbin/apache2 -k start +-48520 /usr/sbin/apache2 -k start +-61991 /usr/sbin/apache2 -k start +-61996 /usr/sbin/apache2 -k start +-62305 /usr/sbin/apache2 -k start +-62307 /usr/sbin/apache2 -k start +-62310 /usr/sbin/apache2 -k start +-62312 /usr/sbin/apache2 -k start +-62313 /usr/sbin/apache2 -k start May 16 09:00:18 www2 systemd[1]: Reloading LSB: Apache2 web server. May 16 09:00:18 www2 apache2[62250]: * Reloading Apache httpd web server apache May 16 09:00:19 www2 apache2[62250]: * May 16 09:00:19 www2 systemd[1]: Reloaded LSB: Apache2 web server. ####################################################### Memcached und Plack is active. user@www2:~$ sudo koha-plack --start library * Error: Plack already running for library [fail] ####################################################### If I try to access the Website it takes about 10 Minutes until this error-page appears: Proxy Error The proxy server received an invalid response from an upstream server. The proxy server could not handle the request GET /index.html. Reason: Error reading from remote server Apache/2.4.18 (Ubuntu) Server at www2.testothek.uni-hamburg.de Port 443 Maybe someone can help me out here. Thanks Jan -- Sent from: http://koha.1045719.n5.nabble.com/Koha-general-f3047918.html