Loot table stopped working after it was locked

So I had done all the steps to create a structure with a loot table, I did the stuff with the merging of data and it everything was working. After it worked I wanted to add my custom enchant on a book to the loot table and after searching online for how to do so I found that you had to edit the code specifically, which requires locking the loot table. After i locked the loot table and specified the enchant on the book the loot table would no longer generate anything in the structure and I cant figure out how to fix this.

TLDR; When I locked the loot table it wont generate loot in my structure.