Error starting django

When trying to start the project in django 1.9.5, it gives this error:

Unhandled exception in thread started by <function wrapper at 0x7fb7346bfc08>
Traceback (most recent call last):
 File "/.virtualenvs/api/local/lib/python2.7/site-packages/django/utils/autoreload.py", line 226, in wrapper
   fn(*args, **kwargs)
 File "/.virtualenvs/api/local/lib/python2.7/site-packages/channels/management/commands/runserver.py", line 45, in inner_run
   self.server_cls = RunserverCommand.server_cls
AttributeError: type object 'Command' has no attribute 'server_cls'

I already searched the internet, tried to reinstall and nothing.

Has anyone ever been through this?