[F] Fix #251: Expected a value of type 'str'

[hykilpikonna]

[erew123]

Hi @hykilpikonna Thanks for the fixes there! There's a lot of code to keep up with, some I'm still updating (including the model_engines.py files), its a lot to handle when on your own. Along with my life situation that has been on-going for much longer than I stated here #377

So appreciate little bug fixes and quality of life improvements. Thanks