ISSUES NOT USING OUR TEMPLATE WILL NOT BE CONSIDERED AND WILL BE CLOSED!

Describe the crash
Unclear, loaded up the world as usual, got notified about issues occuring with dungeon tactics

Crash Log
Crash 1:
crash-2020-03-22_13.36.36-server.txt

Info (please complete the following information):

Modpack Version: 2.76.2
Server or Singleplayer: Singleplayer
Version the world was created on: 2.76.2
Additional context
The issues only occurred when loading in the world yesterday, and today, before that I never had it come up. Didn't really do anything exept for mining 3 cobblestone blocks before the error popped up

The crash report file:
crash-2020-03-22_13.36.36-server.txt

Also sorry if I made a mistake with filling out the Template, just coppied one of the other crash reports as I could not find a template elsewhere

Issue found and resolved. I added the open glider mod a few days ago, and removing it got rid of the error