MultiMC version: 0.7.0-4228 Launched instance in online mode sessionserver.mojang.com resolves to: [13.107.246.77, 2620:1ec:bdf::77] textures.minecraft.net resolves to: [13.107.246.77, 2620:1ec:bdf::77] api.minecraftservices.com resolves to: [13.107.246.77, 2620:1ec:bdf::77] Minecraft folder is: /home/jakub-linuxpc/.local/share/multimc/instances/1.8.9/.minecraft Java path is: /sbin/java Checking Java version... Java is version 21.0.6, using amd64 architecture, from Arch Linux. 11th Gen Intel(R) Core(TM) i7-1165G7 @ 2.80GHz Intel Corporation TigerLake-LP GT2 [Iris Xe Graphics] (rev 01) Subsystem: Huaqin Technology Co.Ltd Device 3e35 Kernel driver in use: i915 Main Class: net.minecraft.launchwrapper.Launch Native path: /home/jakub-linuxpc/.local/share/multimc/instances/1.8.9/natives Libraries: /home/jakub-linuxpc/.local/share/multimc/libraries/net/java/jinput/jinput/2.0.5/jinput-2.0.5.jar /home/jakub-linuxpc/.local/share/multimc/libraries/net/java/jutils/jutils/1.0.0/jutils-1.0.0.jar /home/jakub-linuxpc/.local/share/multimc/libraries/org/lwjgl/lwjgl/lwjgl/2.9.4-nightly-20150209/lwjgl-2.9.4-nightly-20150209.jar /home/jakub-linuxpc/.local/share/multimc/libraries/org/lwjgl/lwjgl/lwjgl_util/2.9.4-nightly-20150209/lwjgl_util-2.9.4-nightly-20150209.jar /home/jakub-linuxpc/.local/share/multimc/libraries/com/mojang/netty/1.8.8/netty-1.8.8.jar /home/jakub-linuxpc/.local/share/multimc/libraries/oshi-project/oshi-core/1.1/oshi-core-1.1.jar /home/jakub-linuxpc/.local/share/multimc/libraries/net/java/dev/jna/jna/3.4.0/jna-3.4.0.jar /home/jakub-linuxpc/.local/share/multimc/libraries/net/java/dev/jna/platform/3.4.0/platform-3.4.0.jar /home/jakub-linuxpc/.local/share/multimc/libraries/com/ibm/icu/icu4j-core-mojang/51.2/icu4j-core-mojang-51.2.jar /home/jakub-linuxpc/.local/share/multimc/libraries/net/sf/jopt-simple/jopt-simple/4.6/jopt-simple-4.6.jar /home/jakub-linuxpc/.local/share/multimc/libraries/com/paulscode/codecjorbis/20101023/codecjorbis-20101023.jar /home/jakub-linuxpc/.local/share/multimc/libraries/com/paulscode/codecwav/20101023/codecwav-20101023.jar /home/jakub-linuxpc/.local/share/multimc/libraries/com/paulscode/libraryjavasound/20101123/libraryjavasound-20101123.jar /home/jakub-linuxpc/.local/share/multimc/libraries/com/paulscode/librarylwjglopenal/20100824/librarylwjglopenal-20100824.jar /home/jakub-linuxpc/.local/share/multimc/libraries/com/paulscode/soundsystem/20120107/soundsystem-20120107.jar /home/jakub-linuxpc/.local/share/multimc/libraries/io/netty/netty-all/4.0.23.Final/netty-all-4.0.23.Final.jar /home/jakub-linuxpc/.local/share/multimc/libraries/com/google/guava/guava/17.0/guava-17.0.jar /home/jakub-linuxpc/.local/share/multimc/libraries/org/apache/commons/commons-lang3/3.3.2/commons-lang3-3.3.2.jar /home/jakub-linuxpc/.local/share/multimc/libraries/commons-io/commons-io/2.4/commons-io-2.4.jar /home/jakub-linuxpc/.local/share/multimc/libraries/commons-codec/commons-codec/1.9/commons-codec-1.9.jar /home/jakub-linuxpc/.local/share/multimc/libraries/com/google/code/gson/gson/2.2.4/gson-2.2.4.jar /home/jakub-linuxpc/.local/share/multimc/libraries/com/mojang/authlib/1.5.21/authlib-1.5.21.jar /home/jakub-linuxpc/.local/share/multimc/libraries/com/mojang/realms/1.7.59/realms-1.7.59.jar /home/jakub-linuxpc/.local/share/multimc/libraries/org/apache/commons/commons-compress/1.8.1/commons-compress-1.8.1.jar /home/jakub-linuxpc/.local/share/multimc/libraries/org/apache/httpcomponents/httpclient/4.3.3/httpclient-4.3.3.jar /home/jakub-linuxpc/.local/share/multimc/libraries/commons-logging/commons-logging/1.1.3/commons-logging-1.1.3.jar /home/jakub-linuxpc/.local/share/multimc/libraries/org/apache/httpcomponents/httpcore/4.3.2/httpcore-4.3.2.jar /home/jakub-linuxpc/.local/share/multimc/libraries/org/apache/logging/log4j/log4j-api/2.0-beta9-fixed/log4j-api-2.0-beta9-fixed.jar /home/jakub-linuxpc/.local/share/multimc/libraries/org/apache/logging/log4j/log4j-core/2.0-beta9-fixed/log4j-core-2.0-beta9-fixed.jar /home/jakub-linuxpc/.local/share/multimc/libraries/tv/twitch/twitch/6.5/twitch-6.5.jar /home/jakub-linuxpc/.local/share/multimc/libraries/net/minecraftforge/forge/1.8.9-11.15.1.2318-1.8.9/forge-1.8.9-11.15.1.2318-1.8.9-universal.jar /home/jakub-linuxpc/.local/share/multimc/libraries/net/minecraft/launchwrapper/1.12/launchwrapper-1.12.jar /home/jakub-linuxpc/.local/share/multimc/libraries/org/ow2/asm/asm-all/5.0.3/asm-all-5.0.3.jar /home/jakub-linuxpc/.local/share/multimc/libraries/jline/jline/2.13/jline-2.13.jar /home/jakub-linuxpc/.local/share/multimc/libraries/com/typesafe/akka/akka-actor_2.11/2.3.3/akka-actor_2.11-2.3.3.jar /home/jakub-linuxpc/.local/share/multimc/libraries/com/typesafe/config/1.2.1/config-1.2.1.jar /home/jakub-linuxpc/.local/share/multimc/libraries/org/scala-lang/scala-actors-migration_2.11/1.1.0/scala-actors-migration_2.11-1.1.0.jar /home/jakub-linuxpc/.local/share/multimc/libraries/org/scala-lang/scala-compiler/2.11.1/scala-compiler-2.11.1.jar /home/jakub-linuxpc/.local/share/multimc/libraries/org/scala-lang/plugins/scala-continuations-library_2.11/1.0.2/scala-continuations-library_2.11-1.0.2.jar /home/jakub-linuxpc/.local/share/multimc/libraries/org/scala-lang/plugins/scala-continuations-plugin_2.11.1/1.0.2/scala-continuations-plugin_2.11.1-1.0.2.jar /home/jakub-linuxpc/.local/share/multimc/libraries/org/scala-lang/scala-library/2.11.1/scala-library-2.11.1.jar /home/jakub-linuxpc/.local/share/multimc/libraries/org/scala-lang/scala-parser-combinators_2.11/1.0.1/scala-parser-combinators_2.11-1.0.1.jar /home/jakub-linuxpc/.local/share/multimc/libraries/org/scala-lang/scala-reflect/2.11.1/scala-reflect-2.11.1.jar /home/jakub-linuxpc/.local/share/multimc/libraries/org/scala-lang/scala-swing_2.11/1.0.1/scala-swing_2.11-1.0.1.jar /home/jakub-linuxpc/.local/share/multimc/libraries/org/scala-lang/scala-xml_2.11/1.0.2/scala-xml_2.11-1.0.2.jar /home/jakub-linuxpc/.local/share/multimc/libraries/lzma/lzma/0.0.1/lzma-0.0.1.jar /home/jakub-linuxpc/.local/share/multimc/libraries/java3d/vecmath/1.5.2/vecmath-1.5.2.jar /home/jakub-linuxpc/.local/share/multimc/libraries/net/sf/trove4j/trove4j/3.0.3/trove4j-3.0.3.jar /home/jakub-linuxpc/.local/share/multimc/libraries/com/mojang/minecraft/1.8.9/minecraft-1.8.9-client.jar Native libraries: /home/jakub-linuxpc/.local/share/multimc/libraries/net/java/jinput/jinput-platform/2.0.5/jinput-platform-2.0.5-natives-linux.jar /home/jakub-linuxpc/.local/share/multimc/libraries/org/lwjgl/lwjgl/lwjgl-platform/2.9.4-nightly-20150209/lwjgl-platform-2.9.4-nightly-20150209-natives-linux.jar Params: --username Bika787Bika --version 1.8.9 --gameDir /home/jakub-linuxpc/.local/share/multimc/instances/1.8.9/.minecraft --assetsDir /home/jakub-linuxpc/.local/share/multimc/assets --assetIndex 1.8 --uuid --accessToken --userProperties {} --userType msa --tweakClass net.minecraftforge.fml.common.launcher.FMLTweaker Window size: 854 x 480 Java Arguments: [-Xms1024m, -Xmx8192m, -Duser.language=en] Minecraft process ID: 1708 Using onesix launcher. Failed to start Minecraft: Exiting with -1 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.(Launch.java:34) at net.minecraft.launchwrapper.Launch.main(Launch.java:28) at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(Unknown Source) at java.base/java.lang.reflect.Method.invoke(Unknown Source) at org.multimc.onesix.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:243) at org.multimc.onesix.OneSixLauncher.launch(OneSixLauncher.java:278) at org.multimc.EntryPoint.listen(EntryPoint.java:143) at org.multimc.EntryPoint.main(EntryPoint.java:34) Process exited with exit code 255 (0xff). Please note that usually neither the exit code, nor its description are enough to diagnose issues! Always upload the entire log and not just the exit code. MultiMC: Log upload triggered at: 19 Mar 2025 12:38:28 +0100