Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x7f267151a840>

Traceback (most recent call last):

  File "/root/ENVS/dj11.7/lib/python3.7/site-packages/django/utils/autoreload.py", line , in wrapper

    fn(*args, **kwargs)

  File "/root/ENVS/dj11.7/lib/python3.7/site-packages/django/core/management/commands/runserver.py", line , in inner_run

    autoreload.raise_last_exception()

  File "/root/ENVS/dj11.7/lib/python3.7/site-packages/django/utils/autoreload.py", line , in raise_last_exception

    six.reraise(*_exception)

  File "/root/ENVS/dj11.7/lib/python3.7/site-packages/django/utils/six.py", line , in reraise

    raise value.with_traceback(tb)

  File "/root/ENVS/dj11.7/lib/python3.7/site-packages/django/utils/autoreload.py", line , in wrapper

    fn(*args, **kwargs)

  File "/root/ENVS/dj11.7/lib/python3.7/site-packages/django/__init__.py", line , in setup

    apps.populate(settings.INSTALLED_APPS)

  File "/root/ENVS/dj11.7/lib/python3.7/site-packages/django/apps/registry.py", line , in populate

    app_config.ready()

  File "/root/ENVS/dj11.7/lib/python3.7/site-packages/channels/apps.py", line , in ready

    monkeypatch_django()

  File "/root/ENVS/dj11.7/lib/python3.7/site-packages/channels/hacks.py", line , in monkeypatch_django

    from .management.commands.runserver import Command as RunserverCommand

  File "/root/ENVS/dj11.7/lib/python3.7/site-packages/channels/management/commands/runserver.py", line , in <module>

    from channels.routing import get_default_application

  File "/root/ENVS/dj11.7/lib/python3.7/site-packages/channels/routing.py", line , in <module>

    from channels.http import AsgiHandler

  File "/root/ENVS/dj11.7/lib/python3.7/site-packages/channels/http.py", line , in <module>

    from asgiref.sync import async_to_sync, sync_to_async

ModuleNotFoundError: No module named 'asgiref.sync'

pip install asgiref==2.1.