Interface error not showing frontend posts

Hi, => Problem number 1. the post I created it can't save the page layout full width no sidebar. even though i am using full frame pro theme. Error like this image link folder.  https://drive.google.com/drive/folders/1fYmv3R4q_iKv0or-RCnFc14GTryjtxz1?usp=share_link Please help fix error it.

Thank you very much