After upgrade to 3.7.11 from 3.7.10 WebSockets start failing.
Django==2.1.2
djangorestframework==3.8.2
daphne==2.3.0
channels==2.3.1

From the 3.7.11 changelog:
Following the controlling specification for URLs defined by WHATWG urllib.parse() now removes ASCII newlines and tabs from URLs, preventing such attacks.

Probably something is not good here now.


2021-07-07T10:11:23.439030174Z2021-07-07 10:11:23,438 ERROR [Failure instance: Traceback: <class 'AttributeError'>: 'NoneType' object has no attribute 'replace'
Error
2021-07-07T10:11:23.439074685Z/root/.local/share/virtualenvs/app-4PlAip0Q/lib/python3.7/site-packages/autobahn/websocket/protocol.py:2841:processHandshake
Error
2021-07-07T10:11:23.439091149Z/root/.local/share/virtualenvs/app-4PlAip0Q/lib/python3.7/site-packages/txaio/tx.py:366:as_future
Error
2021-07-07T10:11:23.439097914Z/root/.local/share/virtualenvs/app-4PlAip0Q/lib/python3.7/site-packages/twisted/internet/defer.py:167:maybeDeferred
Error
2021-07-07T10:11:23.439118640Z/root/.local/share/virtualenvs/app-4PlAip0Q/lib/python3.7/site-packages/daphne/ws_protocol.py:82:onConnect
Error
2021-07-07T10:11:23.439122445Z--- <exception caught here> ---
Error
2021-07-07T10:11:23.439125845Z/root/.local/share/virtualenvs/app-4PlAip0Q/lib/python3.7/site-packages/twisted/internet/defer.py:167:maybeDeferred
Error
2021-07-07T10:11:23.439129088Z/root/.local/share/virtualenvs/app-4PlAip0Q/lib/python3.7/site-packages/daphne/server.py:200:create_application
Error
2021-07-07T10:11:23.439132308Z/root/.local/share/virtualenvs/app-4PlAip0Q/lib/python3.7/site-packages/channels/routing.py:58:__call__
Error
2021-07-07T10:11:23.439135496Z/root/.local/share/virtualenvs/app-4PlAip0Q/lib/python3.7/site-packages/channels/security/websocket.py:35:__call__
Error
2021-07-07T10:11:23.439138809Z/root/.local/share/virtualenvs/app-4PlAip0Q/lib/python3.7/site-packages/channels/security/websocket.py:53:valid_origin