text: Title: Postgresql Problem
  Body: Hello, I am using trying to connect PostgreSQL on my fastapi-admin project.
  Is this possible? I'm getting an error about timeout:
  
   File "/usr/local/lib/python3.9/asyncio/tasks.py", line 492, in wait_for
   raise exceptions.TimeoutError() from exc
  asyncio.exceptions.TimeoutError
  
  On another hand, I would like to connect the project with a custom PostgreSQL DB. Is there any way to do it using my own tables?
  
  ![image](https://user-images.githubusercontent.com/98756380/178712576-ff894acc-764d-4e3d-8e12-3ff68764ca22.png)
  