New comment by apirusKde on void-packages repository https://github.com/void-linux/void-packages/issues/32950#issuecomment-918313106 Comment: Update: I have previously set the java version to java-1-8. Now when openjdk-11 is in use i get this error with Minecraft 1.17: Minecraft process ID: 6916 Using onesix launcher. Exception in thread "main" java.lang.UnsupportedClassVersionError: net/minecraft/client/main/Main has been compiled by a more recent version of the Java Runtime (class file version 60.0), this version of the Java Runtime only recognizes class file versions up to 55.0 at java.base/java.lang.ClassLoader.defineClass1(Native Method) at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1017) at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:174) at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:800) at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:698) at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:621) at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:579) at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522) at org.multimc.onesix.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:171) at org.multimc.onesix.OneSixLauncher.launch(OneSixLauncher.java:231) at org.multimc.EntryPoint.listen(EntryPoint.java:143) at org.multimc.EntryPoint.main(EntryPoint.java:34) Process exited with code 1. Error with Minecraft 1.8.9: Params: --username --version MultiMC5 --gameDir /opt/.multimc/instances/1.8.9/.minecraft --assetsDir /opt/.multimc/assets --assetIndex 1.8 --uuid --accessToken --userProperties --userType Window size: max (if available) Java Arguments: [-Xms1024m, -Xmx8000m, -Duser.language=en] Minecraft process ID: 7020 Using onesix launcher. [17:31:29] [Client thread/INFO]: Setting user: premop [17:31:29] [Client thread/INFO]: (Session ID is token::) [17:31:30] [Client thread/INFO]: LWJGL Version: 2.9.4 Inconsistency detected by ld.so: dl-lookup.c: 105: check_match: Assertion `version->filename == NULL || ! _dl_name_match_p (version->filename, map)' failed! Process exited with code 127.