Why is Telegram api blocking client.get_entity()?

Question

Python

I have a client working via telethon. Once every few minutes, I receive a message from the channel, and I use client.entity() to find out the name of the sender from whom the message came.
Recently, after a dozen calls to this function, Telegram began to block me, and give me the following error:

A wait of ... seconds is required (caused by ResolveUsernameRequest)

With what it can be connected?

Answer 1

You're obviously spamming requests too often. Are you sure you need the sender's name?