FreePBX not accessible

We are running a Trixbox 2.4.2 with FreePBX 2.3.1. No after a while Freepbx is not accessible via the Webbrowser. No errermessage is displayed. The Browser is waiting and waiting, but nothing is displayed. Is where anybody with a solututions for this Problems?

using the package manager, upgrade FreePBX to 2.4.

Honestly, since Fonality(trixbox) decided to fork FreePBX recently… I’d switch to another distro such as Elastix or PBX in a Flash.