You seem to be missing code for TfrmUserRightView. Web page you shared shows no information as to that form. But, it is for sure used by TUserRight.
I have added some remarks in project. They are starting as:
Kod: Tümünü seç
//- -ERTAN
Hope that helps.
P.S. You did not mention Delphi version you are using. Attached project compiles fine using Delphi 10.3.2