World won't load

[XxPurpleWolfxX]

I can load up the game, but if I try to load up a world, it crashes and takes me back the launcher.

I'm using Default (1.8.0_261 64-Bit) Java at 5GB of memory for the modpack Mythic Novus (1.12.2)

[TerdyTheTerd]

Try looking at the crash reports, I bet we can find some useful info in them. Upload one here using a pasting service

[XxPurpleWolfxX]

-snip- Used a pastebin service - Ptolemy

Had to half it. It was a bit too big to attach as a file and too big to have in one reply. Sorry.