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The row in table 'cal_event' with primary key '1' has an invalid foreign key: cal_event.event_creator_id contains a value '0' that does not have a corresponding value in auth_user.id. Code Ex
The row in table 'cal_event' with primary key '1' has an invalid foreign key: cal_event.event_creator_id contains a value '0' that does not have a corresponding value in auth_user.id. 
tutorial_category = models.ForeignKey(TutorialCategory, verbose_name="Category", on_delete=models.CASCADE)
Source: stackoverflow.com



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