Jitpack not working on game start

Hello. Basically I made a custom standalone util library (https://github.com/lolhol/Pathfinder3D) and want to use it with my mod. Although I have done the normal jit pack stuff (basically the tutorial on their website) the Minecraft crashes the second it starts saying that it cannot find the name of a class inside of my library. (When I remove the implement(<my library link thingy>) mc launches normally and does not crash (if I comment out the code that uses the custom lib)). Now then, is there a quick fix for this because all of the other questions that I found on this topic were trying to load another mod (again, not what I’m trying to do). Am I doing something wrong?