Hi. Please double check that your bot is a member of that chat. Note that bots can only be members of a channel if they are admin in that channel. To double check the chat_id, you can also extract it from the updates that your bot gets from that chat.

Hi, you need to add "-" as prefix for your chat id, for example if chat id is 12345, you need to add -12345

Please don't Tag people just to get attention.

You are one of the participants in this issue. That's the reason of me mentioning you.

After installed python-telegram-bot, I ran a simple script as bellow:

from telegram import Bot
my_token = '534*******:AAF*************'
channel_id = -10016********

def push_message(msg, chat_id=channel_id) -> None:
    bot = Bot(my_token)
    bot.sendMessage(chat_id, msg)

push_message('Hello channel')

I got an error telegram.error.BadRequest: Chat not found Someone please help me. I checked the channel ID and I think it's correct. I copied the message link from the channel then got the channel ID from this URL.

I got the same issue too and didn't know how to resolve it.

After installed python-telegram-bot, I ran a simple script as bellow:

from telegram import Bot
my_token = '534*******:AAF*************'
channel_id = -10016********

def push_message(msg, chat_id=channel_id) -> None:
    bot = Bot(my_token)
    bot.sendMessage(chat_id, msg)

push_message('Hello channel')

I got an error telegram.error.BadRequest: Chat not found Someone please help me. I checked the channel ID and I think it's correct. I copied the message link from the channel then got the channel ID from this URL.

I resolved the issue. I found the previous channel id was incorrect. I issued the following command:

https://api.telegram.org/bot<TOKEN>/getUpdates

and check the id is -1002XXXXXXX under the channel name

You may encounter this error if your group was converted to a supergroup and then reverted back to a regular group. In this case, you also need to specify the parameter message_thread_id=0. Unfortunately, Telegram does not return the error "Topic cannot be," but instead writes "Chat not found."