This happens all the time on my FreePBX/RasPBX on the Raspberry Pi -
I hit Apply Config and get this error message in a popup box:
Error!closeError: Did not receive valid response from serverXHR response code: 0 XHR responseText: undefined jQuery status: timeout
It seems the changes are taken most of the time anyways … but sometimes I have to reboot.
Anyone know whats up on this?