It seems like when loading on phase 4 or five, the game crashes Im guessing from how JACOPA handles its integration with TR, I am unable to find a way to disable integration for now, but according to Vanilla fix, it has to do with the OreDictInit class scanning and loading the recipes to be added to the TR grinder, I cant tell what recipe but the report should help. I don't understand what WrapUp has to do with this, but that's also on the list of culprits.

using minecraft 1.12.2
forge 2796
JACOPA: 2.2.8.99
Additions: 2.2.1.9
Singularities: 2.2.0.8
Custom: 2.2.2.14
Wrapup: 1.1.3
Tech reborn: 2.19.0.870
Reborn core: 3.12.0.378

report here

should be fixed