“无法导入ASGI_APPLICATION模块％r”％路径通道问题

如何解决“无法导入ASGI_APPLICATION模块％r”％路径通道问题

我收到此错误：ImproperlyConfigured("Cannot import Asgi_APPLICATION module %r" % path)

这是我的routing.py：

from channels.routing import ProtocolTypeRouter,URLRouter
from channels.security.websocket import AllowedHostsOriginValidator
from channels.auth import AuthMiddlewareStack
from django.urls import path

from messanger.contacts.consumers import ChatConsumer

application = ProtocolTypeRouter({
    # Empty for Now (http->django views is added by default)
    'websocket': AllowedHostsOriginValidator(
        AuthMiddlewareStack(
            URLRouter(
                [
                    path('user-notification',ChatConsumer)
                ]
            )
        )
    )
})

当我删除此行代码时，运行服务器工作：from messanger.contacts.consumers import ChatConsumer

但是我不明白在通讯录应用中我的消费者文件出了什么问题

from channels.consumer import AsyncConsumer


class ChatConsumer(AsyncConsumer):

    async def websocket_connect(self,event):
        await self.send({
            "type": "websocket.accept",})

    async def websocket_receive(self,event):
        await self.send({
            "type": "websocket.send","text": event["text"],})