error when tring to access a=children formset of a model

[kimutaiRop]

I have a polymorphic model that I made and it has many child models which I want the users to be choosing dynamically, posting the first product has no issue, I was able to select the form to send to the user, however when I try subsequent queries for the model to send to user I get error

polymorphic.formsets.models.UnsupportedChildType: The 'ShirtsAndBlouseForm' found a 'PhoneTablets' model in the queryset, but no form class is registered to display it.
my forms look like this

PhonesTabsForm = polymorphic_modelformset_factory(Product, fields=product_fields, formset_children=(
    PolymorphicFormSetChild(PhoneTablets, fields=product_fields + ['screen_size', 'battery_type',
                                                                   'battery_capacity', 'ram_measure', 'ram_storage',
                                                                   'internal_storage']),
))

ShirtsAndBlouseForm = polymorphic_modelformset_factory(Product, fields=product_fields, formset_children=(
    PolymorphicFormSetChild(ShirtsAndBlouse, fields=product_fields + ['techniques',
                                                                      'fit_type', 'length', 'material', 'fabric_type',
                                                                      'wear_type', 'design'], ),
))

I dont understand what could be happening that it can allow me to select the form during the first time but not the second time when product exist in the database

[lukatavcer]

I had the same issue as I forgot to include the child class (StackedPolymorphicInline.Child) in the inline (StackedPolymorphicInline).