I have the latest version of both mods, but it crashes when I try to load the game, and says this: The game crashed whilst there was a severe problem during mod loading that has caused the game to fail
The game crashed whilst there was a severe problem during mod loading that has caused the game to fail
Error: net.minecraftforge.fml.common.LoaderExceptionModCrash: Caught exception from Quark (quark)

Quark isn't updated for the latest forge versions yet. For now, use 14.21.0.2340.

Locking this thread and editing the name so it's visible to people looking at the tracker.