Hi, first I try with my own application needs, and when I got stuck I tried the [Contact Manager Tutorial] both with same error. Tested on a clean new installed WP too.
In the [Admin] on the [Interface Page] the form is listing my DBF records. Well until that.
Whet I click on the [view] or  Action Buttons on the rigt, the pop-up is showing for a short period "Loading entry" and then it remains empty form. Nothing loaded.
I wondered if this is possible because of the permissions???
On the App Builder, at the Interface Setup it's [Permission: read]