It keeps telling me to install this mod if I don't have it?
Can't I turn this off?

If this happens then that means some other mod needs owo and is using owo-sentinel to ease the installation for you. So no, besides removing that other mod you can't turn it off because you won't be able to launch your game without owo

Cheers

문제의 모드"disenchanter-0.1.9+1.21" 작동도 안되면서 "owo-lib"모드를 강제적으로 설치하게 만드는 모드.