404 with attempting create on all new doc types

Questions
1

I am getting a 404 under Content > Parent Node > Create new
For all of my new doc types that I am creating, I am getting the same 404 GetById?id=0

Does anyone have any idea why this would happen? Previously created doc types can still be created but anything new is simply not working.

v11+

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This is a companion discussion topic for the original entry at https://our.umbraco.com/forum/111798-404-with-attempting-create-on-all-new-doc-types