seems redis is the problem

ChannelsDrawShareSite/settings.py

@@ -80,6 +80,13 @@ CHANNEL_LAYERS = {
             "hosts": [('127.0.0.1', 6379)],
         },
     },
+    'heroku': {
+        'BACKEND': 'channels_redis.core.RedisChannelLayer',
+        'CONFIG': {
+            "hosts": [os.environ.get('REDIS_URL', 'redis://localhost:6379')],
+        },
+        "ROUTING": "chat.routing.channel_routing",
+    }
 }
 
 CACHES = {