Ubuntu 18.04.5
При запуске через java -jar PentacraftLauncher.jar выдает
Exception in thread "main" java.lang.ExceptionInInitializerError
at launcher.LoLkeKChEbUREk.main(SourceFile:244)
Caused by: 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 launcher.lOLKEKChebuREK.(SourceFile:32)
… 1 more