How to fix 'raise RuntimeError("populate() isn't reentrant")' error
Straight to the point. Most often this error means a module isn't installed in your virtual environment but python is trying to import it and can't find it.
With the meaning out of the way, search through your registry.py file for 'raise RuntimeError("populate() isn't reentrant")' and replace it with self.app_configs = {}.
This will cause the error to popup like it would in your IDE. With a clearer picture you should be able to understand the error better to import the necessary module(s).
Check your error log, get the issue rectified and restart your server.
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