We have setup cases on our portal with the ability to Search, View, Edit and Create Cases. All appears to be working with the exception of the Case Notes.
When we go to Edit a Case or View a Case the following message appears "Error completing request. We're sorry, but something went wrong. Please try again, and if this persist, contact the website administrator.

The notes were configured following the steps in the link below, including all table permissions. We even tried enabling the rich text editor and disabling the request validation but now change.
https://learn.microsoft.com/en-us/power-pages/configure/configure-notes
Is there something that we are missing? We can see the notes in D365 CE, however they can not be seen on the webpage.