Starting with FastAPI 0.69, pytest tests started to hang under obscure conditions. The same code worked as expected with FastAPI 0.68.2. I had issues with hanging tests in multiple projects. One was ...

Check if 'count' or 'count ()' is a custom function that you're supposed to define or import in your code. If so, define or import it. If 'count' refers to the built-in SQL function for counting rows, ...