Error: Did not receive valid response from server

Hello,
PBX Firmware:6.12.65-27

After some modules update (in Module Admin), i get error:

Error: Did not receive valid response from server
XHR response code: 200 XHR responseText: undefined jQuery status: parsererror

reboot dont help.
telephony not work now.

I moved 11 posts to an existing topic: Module Update Problem

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