This mod is a bug fix that will allow you to get to the other side of the cathedral door using the Teleport spell. For some, like myself, the scripts in this area messed up and the pilgrim who is supposed to run to the other side of the door and die cannot do so because the door closed too early for some reason. This causes the door to stay shut forever. I'm not smart enough to fix the scripts but I was able to move enough things around and edit enough values that it is possible to teleport to the other side of the door. It isn't clean, but at least it works.

Extract the pak file from the zip into your C:\Users\*user*\Documents\Larian Studios\Divinity Original Sin 2\Mods directory