Discs and Dwarf's Poem Bug

[DESCENT INTO CERBERON]

So I just got into the defiled temple, where it seems I should solve something related to the discs on the ground. A hidden roll of investigation led me to the Dwarf's Poem on my inventary, a book I got some time ago.

So I just opened the book and the following phrase is shown:

"SHA_EntranceInstructionPaper".

It seems the book was suposed to have some kind of tip about the discs, but it's bugged. Please solve it!

[AtomicFae]

that apparently is supposed to contain content but mine didnt either. it's mainly just a quest/progression trigger. there are at least one (maybe two) other books to find about the discs on the floor, the priestess journal near the bed in the room with the ogre guard and i think there may be another note somewhere about it. you can also lockpick the 'hidden switch' for the door and if u succeed u can bypass the puzzle all together.