WoW-Mania

I press Play on the launcher and I get this

ERROR #121 (0x85100079) Version Mismatch
Program:
C:\Users\MCren\Downloads\WoW-Mania-EN-2.11.2\WoW-Mania-EN-2.11.2\WoW-Mania.exe

DBFilesClient\DestructibleModelData.dbc has wrong number of columns (found 17, expected 19)

I have no idea what any of this means and I cant launch the game. Can someone please help?

I seem to have this issue too

Have checked the necessary files to see if they're *not* read-only and have the latest Launcher + client downloaded from the website.