Error: Runtime Error Deadlock occurring randomly in Django

[gaoyi-ai]

After the WebSocket is connected, here has trouble with RuntimeError (Error message: Single thread executor already being user, would deadlock)

[gaoyi-ai]

Try pip install asgiref==3.3.4.

I noticed the RuntimeError: Single thread executor already being used, would deadlock after installing asgiref 3.4.1.

This appears to be due to a currently unresolved issue in channels 3.0.4 where concurrent requests on the Django development server are intermittently failing. See also Runtime Error Deadlock occurring randomly in Django. link: ASGIRef 3.4.1 + Channels 3.0.3 causes non-deterministic 500 errors serving static files #1722

In 3.4.0, asgiref introduced additional deadlock checks. That's a good thing, but may have exposed an underlying issue in channels. From the changelog:

Calling sync_to_async directly from inside itself (which causes a deadlock when in the default, thread-sensitive mode) now has deadlock detection.