python - Cant add add_child to the Page table

Question

When adding add_child to the Page table

obj_cruise = self.obj_cruise_index.add_child (
                    instance = Cruise (** options))

an error comes out

ERROR: NULL in column "translation_key" of relationship "wagtailcore_page" violates NOT NULL constraint

But translation_key has to be generated itself, right? What is the problem here? Thanks in advance for your help!

Answer 1

等待大神答复