When running about an hour without any action, it crash and repeat this error in console:

("Unhandled error in custom exception handler\ncontext: {'message': 'Exception in callback _SelectorSocketTransport._read_ready()', 'exception': RuntimeError('cannot enter context: <Context object at 0x7fdc8c5ef510> is already entered'), 'handle': <Handle _SelectorSocketTransport._read_ready()>}",), {'exc_info': (<class 'RecursionError'>, RecursionError('maximum recursion depth exceeded'), <traceback object at 0x7fdc94027d48>)}

Need control-c to stop.

It is clearly a infinite recursion, but where ?

Recursion exception is now well supported by logging:

https://bugs.python.org/issue36272

So this is a logging in a recursion which raise this.

May be the following crawling network error logging : ERROR:sakia:Could not parse field HeadV1 But it is not in a recursive function...