I am not sure if that is the case cause as seen in the link above they are also using the old launcher. which may be the main issue as it is outdated. I may fix it if I figure out how to update the launcher.
So I have been trying to play modpacks by using the twitch launcher but whenever I try to start a modpack like RLcraft it doesn't load. It just crashes and has a game output message appear.
This is the message:
Java HotSpot(TM) 64-Bit Server VM warning: Ignoring option PermSize; support was removed in 8.0Java HotSpot(TM) 64-Bit Server VM warning: Ignoring option PermSize; support was removed in 8.0Exception in thread "main" java.lang.ClassCastException: class jdk.internal.loader.ClassLoaders$AppClassLoader cannot be cast to class java.net.URLClassLoader (jdk.internal.loader.ClassLoaders$AppClassLoader and java.net.URLClassLoader are in module java.base of loader 'bootstrap') at net.minecraft.launchwrapper.Launch.<init>(Launch.java:34) at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
I am hoping someone can tell what this message is trying to tell me so I can sort out the issue. Thanks!