Hello, I use Prefect Cloud and a day ago our general work queue changed status to "Not ready", while we didn't make any change. How's that possible?

docs is your worker process alive?

You're right, it's down. I thought that Prefect cloud is responsible for managing workers

no, that's only true if you're using a push-type work pool where you're not running the worker https://docs.prefect.io/v3/concepts/workers