I tried to add a new enchantment to the ancient tome config from a different mod, I restarted the game and it loaded but said quark failed to load and didn't let me get in the game to remove the changes I made to the config. I must of put in the enchantment wrong. it wont let me fix it though. quark is my favorite mod and now I can't use it. Is there a way to reset the configs of quark out of the game?

delete the config in (modpack directory)\config\quark-common.toml

Ideally config problems would not crash the game this hard, but yeah, you can always edit the config file outside of the game with notepad. .toml files are just text files, after all.