How to get rid of pyrogram.errors.exceptions.bad_request_400.PeerIdInvalid?

Question

Python

await app.get_chat(chat)- does not give an error, but

await message.forward(chat)- gives an error

pyrogram.errors.exceptions.bad_request_400.PeerIdInvalid: [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

I am a member of the group where I want to forward the message and even am the admin there. How to fix it?

c = await app.resolve_peer(int(chat))
await message.forward(c.chat_id)

This code doesn't work either.