fix

api/asgi.py

@@ -11,6 +11,7 @@ import os
 
 from channels.routing import ProtocolTypeRouter, URLRouter
 from channels.auth import AuthMiddlewareStack
+from channels.security.websocket import AllowedHostsOriginValidator
 
 from django.core.asgi import get_asgi_application
 from chat.url import websocket_urlpatterns
@@ -20,6 +21,8 @@ os.environ.setdefault("DJANGO_SETTINGS_MODULE", "api.settings")
 application = ProtocolTypeRouter(
     {
         "http": get_asgi_application(),
-        "websocket": AuthMiddlewareStack(URLRouter(websocket_urlpatterns)),
+        "websocket": AllowedHostsOriginValidator(
+            AuthMiddlewareStack(URLRouter(websocket_urlpatterns))
+        ),
     }
 )