问题
I am trying to follow the 4 part channels tutorial, however I am getting an error on the last part where we run selenium to test against a live server. It's not the end of the world as I can still run the server with no problems, however it limits my ability to test which is a shame. I have the full details in the closed issue below (to avoid repetition) https://github.com/django/channels/issues/1207
I have somehow also managed to get these tests to run and pass with channels version 2.0.2 since opening the issue, however versions 2.1.6 still fails. I'm unfortunately not experienced enough with the packages in the error trace to diagnose the problem myself. Thanks in advance, hopefully this is enough information. I can provide more on request.
来源：https://stackoverflow.com/questions/54039839/channelsliveservertestcase-failing-with-error-while-following-django-channels-tu