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.
12. October 2018
Instead of implementing image optimizing routines into your application, this could be achieved quite easily by using a cron.
18. May 2017
As I recently tried to define some apparmor rules on Ubuntu 16.04. I realized that the service was not working properly.