Using LMS (Lightweight Music Server) as backend.

Logs:

[error] [API_SUBSONIC] Error while processing request ‘/ping’, params = [{c=Tempus}, {f=json}, {s=c351596f-6256-46d8-b228-aca61ad34637}, {t=9142036433231be402221a13f5930c48}, {u=zingo}, {v=1.15.0}], code = 42, msg = ‘Provided authentication mechanism not supported.’

I’m currently using Ultrasonic with no problem.