Cannot Connect To Telethon

[ibr2020]

telethon was working fine but suddenly when i try connect to telethon using client.connect() or client.start() I get the following error

WARNING:telethon.network.mtprotosender:Connection error 5 during auth_key gen: ConnectionError: Not connected
INFO:telethon.network.connection.connection:<class 'OSError'> during disconnect: [WinError 121]The semaphore timeout period has expired

Could anyone help me please..
I am using Telethon from yemen..windows8
I Updated Telethon Version to 1.23.0 and the problem unsolved
I Updated pip Version to 21.3.1 and the problem unsolved
python Version 3.8.6

[seriyps]

Could you show us the code you use to connect with Telethon? What arguments you pass to client = TelegramClient(...)?

Also, are you able to connect with regular telegram client to the same proxy?