fields.E312: The to_field <field name> doesn’t exist on the related model <app label>.<model>. fields.E320: Field specifies on_delete=SET_NULL, but cannot be null. fields.E321: The field specifies on_delete=SET_DEFAULT, but has no default value. fields.E330: ManyToManyFields cannot ...
FieldDoesNotExist,FieldError,MultipleObjectsReturned,ObjectDoesNotExist,ValidationError,)fromdjango.dbimport(DEFAULT_DB_ALIAS,DJANGO_VERSION_PICKLE_KEY,DatabaseError,connection,connections
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fields.E312: The to_field <field name> doesn’t exist on the related model <app label>.<model>. fields.E320: Field specifies on_delete=SET_NULL, but cannot be null. fields.E321: The field specifies on_delete=SET_DEFAULT, but has no default value. fields.E330: ManyToManyFields cannot ...