There is no guide with commands (installing all the pip packages), and no reason why need to provide all this configs and not only bot API. 'start' isn't starting this python program, but I'm not sure I'm running the right one. Please provide more information.

I got error:

Pyrogram v1.2.6, Copyright (C) 2017-2021 Dan <https://github.com/delivrance>
Licensed under the terms of the GNU Lesser General Public License v3 or later (LGPLv3+)

remove: path should be string, bytes or os.PathLike, not NoneType
Download Failed: [400 CHANNEL_INVALID]: The channel parameter is invalid (caused by "channels.GetChannels")
[400 CHANNEL_INVALID]: The channel parameter is invalid (caused by "channels.GetChannels")
Traceback (most recent call last):
  File "/home/xdavidt/Watermark-Bot/VENV/lib/python3.8/site-packages/pyrogram/methods/advanced/resolve_peer.py", line 60, in resolve_peer
    return await self.storage.get_peer_by_id(peer_id)
  File "/home/xdavidt/Watermark-Bot/VENV/lib/python3.8/site-packages/pyrogram/storage/sqlite_storage.py", line 147, in get_peer_by_id
    raise KeyError(f"ID not found: {peer_id}")
KeyError: 'ID not found: -1001478052015'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/xdavidt/Watermark-Bot/VENV/lib/python3.8/site-packages/pyrogram/dispatcher.py", line 217, in handler_worker
    await handler.callback(self.client, *args)
  File "bot.py", line 70, in HelpWatermark
    await bot.send_message(
  File "/home/xdavidt/Watermark-Bot/VENV/lib/python3.8/site-packages/pyrogram/methods/messages/send_message.py", line 127, in send_message
    peer=await self.resolve_peer(chat_id),
  File "/home/xdavidt/Watermark-Bot/VENV/lib/python3.8/site-packages/pyrogram/methods/advanced/resolve_peer.py", line 109, in resolve_peer
    await self.send(
  File "/home/xdavidt/Watermark-Bot/VENV/lib/python3.8/site-packages/pyrogram/methods/advanced/send.py", line 77, in send
    r = await self.session.send(
  File "/home/xdavidt/Watermark-Bot/VENV/lib/python3.8/site-packages/pyrogram/session/session.py", line 425, in send
    return await self._send(data, timeout=timeout)
  File "/home/xdavidt/Watermark-Bot/VENV/lib/python3.8/site-packages/pyrogram/session/session.py", line 395, in _send
    RPCError.raise_it(result, type(data))
  File "/home/xdavidt/Watermark-Bot/VENV/lib/python3.8/site-packages/pyrogram/errors/rpc_error.py", line 78, in raise_it
    raise getattr(
pyrogram.errors.exceptions.bad_request_400.ChannelInvalid: [400 CHANNEL_INVALID]: The channel parameter is invalid (caused by "channels.GetChannels")

Not sure why need log_channel, but I open a new channel and use https://t.me/username_to_id_bot to find out the ID. So I changed that line into: LOG_CHANNEL = int(-1001478052015)

pyrogram.errors.exceptions.bad_request_400.ChannelInvalid: [400 CHANNEL_INVALID]: The channel parameter is invalid (caused by "channels.GetChannels")

Hello @AbirHasan2005 After deploying the bot, it responded as it should be. Then after sending image to use as a watermark, I send a video to the bot then it responded, Unable to Download The Video!. In terminal, remove: path should be string, bytes or os.PathLike, not NoneType Download Failed: Telegram says: [400 PEER_ID_INVALID] - The peer id being used is invalid or not known yet. Make sure you meet the peer before interacting with it with this error message. I'm looking for a solution.