World Not Loading

[GyattOhioRizzler]

Describe the bug
The bug is when I start or load a world, it says "World Loading" and then it shows "0%" and gets stuck there.
To Reproduce
Steps to reproduce the behavior:

1. Go to curseforge or the terrariacraft website and download the Official TerrariaCraft Modpack
2. Play the modpack
3. press singleplayer
4. load or create a world
5. The world gets stuck at "0%"

Expected behavior
I expected for me to create a world, and then the world to load so I could play the mod.

-Minecraft- 1.12.2

• Forge - 14.23.5.2860
  Betterfps - 1.4.8
  Colored Lux - 1.12.2-12.6.30
  CubicChunks - 1.12.2-0.0.1208.0-snapshot-all
  FoamFix-0.10.14-1.12.2
  HammerLib-1.12.2-2.0.6.32
  MusicLayer - 1.12.2-12.3.21
  TerrariaCraft - 1.12.2-12.5.32
  RecipeViewer - 1.12.2-5.2.7
  VanillaFix-1.0.10-150
• Optifine Installed: [NO]

[Zeitheron]

Check and see if it still happens with 12.6 pre-release, available through our launcher

[GyattOhioRizzler]

launcher

The launcher keeps crashing everytime I try to open it, I'm on mac
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