May you tell me how to solve this problem?

[Tristannnnnnnnn]

Where is the problem? I have only changed my images & labels, the labels are polygons ( four point ), nothing else.

Error :
Model = Model if not polygon else Polygon_Model
UnboundLocalError: local variable 'Model' referenced before assignment

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By the way, can I run this on Windows? Or it can only run on Ubuntu...

[autismmmmm]

Model = Model if not polygon else Polygon_Model
the pre Model has the same name as the later Model