When running the anti-matter chemistry modpack and introducing Cubic Chunks into it-
it causes the main menu to crash due to modularUI.
I have no idea how these two could possibly have issues but removing ModularUI just fixes it.
https://www.curseforge.com/minecraft/modpacks/antimatter-chemistry
https://www.curseforge.com/minecraft/mc-mods/modularui
its worth noting that the ModularUI api is used only for the scrollwheel sorting mod included in the modpack
https://www.curseforge.com/minecraft/mc-mods/inventory-bogo-sorter