AttributeError: Can't get attribute on <module '__main__' from manage.py

AttributeError: Can't get attribute on

# If this is an issue with pickle, it is because pickling and # unpickling a file needs to take place within a loop with access # to the class that ctreated the pickle in the first place as explained below: ''' Classes (and functions) are not pickled, only references to how to find the same class again in your program are stored. Instances then are loaded by creating a new instance of that class and loading unpickled data into the new instance. If you removed a class, then you can't load the pickle anymore. ''' A technical solution can be found below: https://stackoverflow.com/questions/40287657/load-pickled-object-in-different-file-attribute-error/40288996

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Source: stackoverflow.com