Entire page no longer working

I have no idea what has happened to this. I published some changes back on the 5th, then went on vacation for a week. I come back to look at some things to change, update radzen, and now have a page I cannot view or edit. Is there an easy way to resolve this?

Is this only in design-time or in runtime as well?

I'm not sure what happened but when I re-inferred the DB there was a child table that was not selected that caused this to happen.