After deploying my Python Bot in azure its not working

I am trying to create an Azure bot using the Python Azure sdk framework and deploy it on azure app service  azure bot. The bot works well on my local with emulator (windows laptop). But once I deploy it does not work in the test web chat option in Azure.

My app.py file code -

import sqlite3

from pathlib import Path

import sys

import traceback

from datetime import datetime

from googleai import ai

from aiohttp import web

from aiohttp.web import Request, Response, json_response

from botbuilder.core import (

    BotFrameworkAdapterSettings,

    TurnContext,

    BotFrameworkAdapter,

    ConversationState,

  UserState,

  MemoryStorage

)

from botbuilder.core.integration import aiohttp_error_middleware

from botbuilder.schema import Activity, ActivityTypes





from bot import MyBot

from config import DefaultConfig



CONFIG = DefaultConfig()



# Create adapter.

# See https://aka.ms/about-bot-adapter to learn more about how bots work.

SETTINGS = BotFrameworkAdapterSettings(CONFIG.APP_ID, CONFIG.APP_PASSWORD)

ADAPTER = BotFrameworkAdapter(SETTINGS)





# Catch-all for errors.

async def on_error(context: TurnContext, error: Exception):

    # This check writes out errors to console log .vs. app insights.

    # NOTE: In production environment, you should consider logging this to Azure

    #       application insights.

    print(f"\n [on_turn_error] unhandled error: {error}", file=sys.stderr)

    traceback.print_exc()

    # if(context.activity.text=="")

    await context.send_activity(

        "i didnt understand what you mean ,pls rewrite your questin with more info what you looking for"

    )

    # Send a trace activity if we're talking to the Bot Framework Emulator

    if context.activity.channel_id == "emulator":

        # Create a trace activity that contains the error object

        trace_activity = Activity(

            label="TurnError",

            name="on_turn_error Trace",

            timestamp=datetime.utcnow(),

            type=ActivityTypes.trace,

            value=f"{error}",

            value_type="https://www.botframework.com/schemas/error",

        )

        # Send a trace activity, which will be displayed in Bot Framework Emulator

        await context.send_activity(trace_activity)





ADAPTER.on_turn_error = on_error



def create_database():

        conn = sqlite3.connect('Chinook.db')

        speech_file_path = Path(__file__).parent / "Chinook_Sqlite.sql"

        with open(speech_file_path, 'r',encoding='cp1252', errors='replace') as f:

         sql_script = f.read()

         conn.executescript(sql_script)

        conn.close()



memstore = MemoryStorage()

constate = ConversationState(memstore)

userstate = UserState(memstore)

# Create the Bot

BOT = MyBot(constate,userstate,CONFIG.EXPIRE_AFTER_SECONDS)





# Listen for incoming requests on /api/messages

async def messages(req: Request) -> Response:

    # Main bot message handler.

    if "application/json" in req.headers["Content-Type"]:

        body = await req.json()

    else:

        return Response(status=415)



    activity = Activity().deserialize(body)

    auth_header = req.headers["Authorization"] if "Authorization" in req.headers else ""



    response = await ADAPTER.process_activity(activity, auth_header, BOT.on_turn)

    if response:

        return json_response(data=response.body, status=response.status)

    return Response(status=201)



def init_func(argv):

    APP = web.Application(middlewares=[aiohttp_error_middleware])

    APP.router.add_post("/api/messages", messages)

    return APP





if __name__ == "__main__":

    APP = init_func(None)

    try:

        web.run_app(APP, host="0.0.0.0", port=CONFIG.PORT)

    except Exception as error:

        raise error

Startup command is - python3 -m aiohttp.web -H 0.0.0.0 -P 8000 app:init_func 

Error -

 IN App Service -> Log stream -

Container bot-webapp01_0_aa92351a for site bot-webapp01 has exited, failing site start

Container bot-webapp01_0_aa92351a didn't respond to HTTP pings on port: 8000, failing site start. See container logs for debugging.