Domoticz

Volumio hardware stops working after a while. A restart of the hardware fixes the problem temporarily. This issue occurs with Volumio 4, not with previous versions.

Sample of error messages in domoticz log:
Error: (ProcessWholeMessage) Unknown Operation Code (13) encountered.
Error: Volumio: Call to function 'ProcessInbound' failed, exception details:
Error: Volumio: Exception: 'UnicodeDecodeError'. No traceback available.
Error: (ProcessWholeMessage) Unknown Operation Code (3) encountered.

Domoticz 2025.2 (build 16990)
Volumio 4.072

The python plugin indeed states its only for volumio 2 and 3
https://github.com/frepkovsky/Domoticz-Volumio-Plugin

Perhaps make an issue there to ask for support of 4.