Technical Specs (please complete the following information):

• Craft to Exile - Version 2.1.2b
• World Type - singleplayer
• RAM Allocation - 6GB

Describe the bug
Game crash

To Reproduce
Steps to reproduce the behavior:

1. Enter New or existing World
2. Just play game
3. Game crashes

Expected behavior
Just play game without crashes

Additional Information (screen shots, etc.)
Here is my crash-log.
crash-2021-04-13_18.16.40-server.txt

Hey everyone. Having the same issue. The game starts ok then I choose any world and it crashes during the loading screen just before 0% world loading info
Everything same as with TheDarkRisen but RAM allocation is 5Gb
crash-2021-04-13_23.02.40-server.txt

You have another problem. My issue seems related with repurposed structures mod.

Find this issue:
TelepathicGrunt/RepurposedStructures-Quilt#106

Thank you @TheDarkRisen for posting. His datapack worked great, don't know why I didn't think of it earlier!