When trying to add Optifine to a curseforge modpack, it crashes on startup. I've followed tutorials on how to do it and to my knowledge I've done everything right. I am using the correct optifine version for both the version of minecraft and forge. I download optifine from the official website, then drag and drop the jar file into the mods folder of the modpack. I start up the pack and get a crash every single time, regardless of the version of optifine or which modpack I try to install it on. Someone please tell me what I'm doing wrong.
Here is the crash report:
The game crashed whilst there was a severe problem during mod loading that has caused the game to fail
Error: net.minecraftforge.fml.common.LoaderException: java.lang.ExceptionInInitializerError
Exit Code: -1
