Why does this error occur when performing operations after a while, but it happens immediately?

Question

Python

2016-10-19 14:04:04,832 (__init__.py:220 MainThread) ERROR - TeleBot: "A request to the Telegram API was unsuccessful. The server returned HTTP 409 Conflict. Response body:
[b'{"ok": false,"error_code":409,"description":"Conflict: terminated by other long poll or webhook"}']"
I'm making a bot - calculator functionality. It thinks everything is normal at first, then at some point this error occurs and no matter what I write to the bot, it displays to me through the handler that the error is an error and this error comes out in the logs.