A free mod for Witcher 3, by MerseyRockoff.
This mod is designed to fix the Moritz Diefenthel burning on a stake scene.
When the story begins, Moritz is supposed to be arrested and put on a pyre right outside the Glory Gate in Novigrad. Unfortunately, the scene is bugged, Moritz is invisible and the only way you can interact with this encounter is to attack the guards.
There are two primary issues in this particular scene. The first one is when a certain file exists to clean Vegelbud Estate from entities that shouldn’t be there, in the first place, after the ball. The second one is even after getting the character out on the pyre, he wasn’t interacting with the witch hunter.