Trying to drill down the issue, it seems it is happening when accessing my Radio Playlist (Dirble+Tunein). The playlist is not showing and the log starts filling up with those messages. I have then found this one:
2019-03-17 17:39:15,449 INFO [426:MainThread] mopidy.commands: GLib mainloop got SIGTERM. Exiting...
2019-03-17 17:39:15,451 INFO [426:MainThread] mopidy.commands: Stopping Mopidy frontends
2019-03-17 17:39:33,996 WARNING [426:DirbleBackend-13] urllib3.connectionpool: Retrying (Retry(total
=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ReadTimeoutErr
or("HTTPConnectionPool(host='api.dirble.com', port=80): Read timed out. (read timeout=30.0)",)': /v2
Could this be the problem?