Django: Ошибка во время рукопожатия WebSocket: Неожиданный код ответа: 500

Я следовал этому руководству для создания приложения чата.

Я столкнулся с тем, что WebSocket-соединение с 'ws://127.0.0.1:8000/ws/lobby/' не удалось: Error during WebSocket handshake: Неожиданный код ответа: 500 error. Я проверил и другие решения, но они, похоже, не работают.

В консоли отображается ошибка по адресу (room.html)

            'ws://'
            + window.location.host
            + '/ws/'
            + roomName
            + '/'
            );

в консоли.

На терминале отображается следующее:

HTTP GET /favicon.ico/ 200 [0.01, 127.0.0.1:53842]
HTTP GET /lobby/?username=darsh 200 [0.01, 127.0.0.1:53842]
WebSocket HANDSHAKING /ws/lobby/ [127.0.0.1:53844]
HTTP GET /favicon.ico/ 200 [0.01, 127.0.0.1:53842]
Exception inside application: No route found for path 'ws/lobby/'.
Traceback (most recent call last):
  File "/home/darsh/.local/lib/python3.8/site-packages/channels/staticfiles.py", line 44, in __call__
    return await self.application(scope, receive, send)
  File "/home/darsh/.local/lib/python3.8/site-packages/channels/routing.py", line 71, in __call__
    return await application(scope, receive, send)
  File "/home/darsh/.local/lib/python3.8/site-packages/channels/sessions.py", line 47, in __call__
    return await self.inner(dict(scope, cookies=cookies), receive, send)
  File "/home/darsh/.local/lib/python3.8/site-packages/channels/sessions.py", line 263, in __call__
    return await self.inner(wrapper.scope, receive, wrapper.send)
  File "/home/darsh/.local/lib/python3.8/site-packages/channels/auth.py", line 185, in __call__
    return await super().__call__(scope, receive, send)
  File "/home/darsh/.local/lib/python3.8/site-packages/channels/middleware.py", line 26, in __call__
    return await self.inner(scope, receive, send)
  File "/home/darsh/.local/lib/python3.8/site-packages/channels/routing.py", line 168, in __call__
    raise ValueError("No route found for path %r." % path)
ValueError: No route found for path 'ws/lobby/'.
WebSocket DISCONNECT /ws/lobby/ [127.0.0.1:53844]

Я прилагаю коды, которые я использовал:

chat/room.html

routing.py

from django.urls import re_path

from . import consumers

websocket_urlpatterns = [
  path('ws/', consumers.ChatConsumer.as_asgi()), # Using asgi
]

consumers.py

from channels.generic.websocket import AsyncWebsocketConsumer # The class we're using
from asgiref.sync import sync_to_async # Implement later

class ChatConsumer(AsyncWebsocketConsumer):
    async def connect(self):
        self.room_name = self.scope['url_route']['kwargs']['room_name']
        self.room_group_name = 'chat_%s' % self.room_name

        #Join room
        await self.channel_layer.group_add(
            self.room_group_name,
            self.channel_name
        )

        await self.accept()

    async def disconnect(self, close_code):
        #Leave group
        await self.channel_layer.group_discard(
            self.room_group_name,
            self.channel_name
        )

    async def receive(self, text_data):
        data = json.loads(text_data)
        message = data['message']
        username = data['username']
        room = data['room']

         # Send message to room group
        await self.channel_layer.group_send(
            self.room_group_name,
            {
            'type': 'chat_message',
            'message': message,
            'username': username
            }
        )

    # Receive message from room group
    async def chat_message(self, event):
        message = event['message']
        username = event['username']

        # Send message to WebSocket
        await self.send(text_data=json.dumps({
            'message': message,
            'username': username
        }))

from django.urls import re_path 

websocket_urlpatterns = [
  re_path('ws/(?P<room_name>\w+)/', consumers.ChatConsumer.as_asgi()), # Using asgi
]