Starting from Apache 2.4.27, the Apache MPM (Multi-Processing Module) prefork no longer supports HTTP/2. Enabling HTTP/2 support requires some more steps than just enabling the apache module.
Instead of implementing image optimizing routines into your application, this could be achieved quite easily by using a cron.
After adding online accounts in Gnome Settings mounts did not show up in filemanager (Nautilus).
As I recently tried to define some apparmor rules on Ubuntu 16.04. I realized that the service was not working properly.