The ListPart in custom widget reported errors "The page could not be found".

[effapp]

Describe the bug

The ListPart in custom widget reported errors "The page could not be found".

To Reproduce

Steps to reproduce the behavior:

1. Create a new content type with Widget stereotype and name ListWidget.

2. Add ListPart to ListWidget.

3. Set "Contained Content Types" of ListPart Settings to "Product".

4. Create a new content item of Page and add a ListWidget to Flow of the content item of Page.
   

5. Click on 'List Items' then display ""The page could not be found".
   

6. Click on 'Edit List Widget' then display ""The page could not be found".

7. Click on 'Create Product' to add a couple of product content items, but the widget don't display these content items.
   

[MikeAlhayek]

I have no idea why you would add ListPart using Flow Part.

I am guessing you are doing something fundamentally wrong.

List part will allow you to create multiple contents under a single content. For example, if your content item is called Company and it has a list part with Location as a contained content type, then under each Company content item you'll have the ability to add/removed/edit multiple locations using the list part.

Maybe you can elaborate about your use case so we can provide you more guidance. This isn't a issue so I am converting this issue to a discussion.