Game crashes with crash-log: https://pastebin.com/2ugq2w6a
latest.log provided here: https://pastebin.com/ruYVctPv

Game crashes upon trying to create a singleplayer world (perhaps more ways for this crash to occour)
Does not crash without this mod.

After some annoying testing back and forth looking everywhere. I decided to just delete all the Rocket Recipes under data\cp_tweaks\recipes\rockets
The game now boots up and worlds can be loaded.

A Server running with the same mods spits out the same errors in console.

Upon trying to open a save that does not contain Create Planetary Tweaks, Minecraft says

"Errors in currently selected data packs prevented the world from loading. You can either try to load it with only the vanilla data pack ("safe mode"), or go back to the title screen and fix it manually."