SnowCode

I don't know how to close this topic but this is a quick summary for those who had the same problem as me. 1. Install Forge 2. Go into the "forge" profile in the launcher and go into "more options" 3. Into Java executable write "/usr/lib/jvm/java-8-openjdk-amd64/bin/java" to find this path I ran "update-alternatives --list java" and added "/bin/java" to get the file 4. Save and run Minecraft NB: This has been made on a Forge and Minecraft installation. If you still get issues try to clean the mod folder to find which mod cause the problem. Finally, if you still get errors you can create a topic on this forum. Thanks to diesieben07 for his precious help. SnowCode

I also have Java 8 installed (open-jdk-8) so how can I switch from openjdk 11.0.4 to 8? Thanks for your answer!

I created a blank Forge installation by removing my .minecraft folder. I ran the latest official version. Then I ran the Forge version of 1.14.4 And Minecraft sent me this: This is the log I found in "latest.log": [16Nov2019 09:48:49.932] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: ModLauncher running: args [--username, jonckeu24, --version, 1.14.4-forge-28.1.0, --gameDir, /home/chopin/.minecraft, --assetsDir, /home/chopin/.minecraft/assets, --assetIndex, 1.14, --uuid, 3a9974be4ee7499c8b4d6070f9003e02, --accessToken, ❄❄❄❄❄❄❄❄, --userType, mojang, --versionType, release, --launchTarget, fmlclient, --fml.forgeVersion, 28.1.0, --fml.mcVersion, 1.14.4, --fml.forgeGroup, net.minecraftforge, --fml.mcpVersion, 20190829.143755] [16Nov2019 09:48:49.939] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: ModLauncher 3.2.0+60+b86c1d4 starting: java version 11.0.4 by Ubuntu [16Nov2019 09:48:52.979] [main/INFO] [net.minecraftforge.fml.loading.FixSSL/CORE]: Added Lets Encrypt root certificates as additional trust [16Nov2019 09:48:57.505] [main/INFO] [STDERR/]: [jdk.nashorn.api.scripting.NashornScriptEngine:<init>:143]: Warning: Nashorn engine is planned to be removed from a future JDK release [16Nov2019 09:48:58.456] [main/INFO] [cpw.mods.modlauncher.LaunchServiceHandler/MODLAUNCHER]: Launching target 'fmlclient' with arguments [--version, 1.14.4-forge-28.1.0, --gameDir, /home/chopin/.minecraft, --assetsDir, /home/chopin/.minecraft/assets, --username, jonckeu24, --assetIndex, 1.14, --uuid, 3a9974be4ee7499c8b4d6070f9003e02, --accessToken, ❄❄❄❄❄❄❄❄, --userType, mojang, --versionType, release] [16Nov2019 09:48:58.750] [Client thread/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1050]: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException [16Nov2019 09:48:58.751] [Client thread/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1050]: at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:39) [16Nov2019 09:48:58.752] [Client thread/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1050]: at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:50) [16Nov2019 09:48:58.753] [Client thread/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1050]: at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:68) [16Nov2019 09:48:58.753] [Client thread/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1050]: at cpw.mods.modlauncher.Launcher.run(Launcher.java:80) [16Nov2019 09:48:58.754] [Client thread/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1050]: at cpw.mods.modlauncher.Launcher.main(Launcher.java:65) [16Nov2019 09:48:58.755] [Client thread/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1059]: Caused by: java.lang.reflect.InvocationTargetException [16Nov2019 09:48:58.755] [Client thread/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1059]: at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [16Nov2019 09:48:58.756] [Client thread/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1059]: at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) [16Nov2019 09:48:58.757] [Client thread/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1059]: at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [16Nov2019 09:48:58.757] [Client thread/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1059]: at java.base/java.lang.reflect.Method.invoke(Method.java:566) [16Nov2019 09:48:58.758] [Client thread/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1059]: at net.minecraftforge.fml.loading.FMLClientLaunchProvider.lambda$launchService$0(FMLClientLaunchProvider.java:56) [16Nov2019 09:48:58.759] [Client thread/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1059]: at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [16Nov2019 09:48:58.759] [Client thread/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1059]: ... 4 more [16Nov2019 09:48:58.760] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: Caused by: java.lang.UnsupportedOperationException [16Nov2019 09:48:58.761] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at org.objectweb.asm.ClassVisitor.visitNestMemberExperimental(ClassVisitor.java:248) [16Nov2019 09:48:58.761] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at org.objectweb.asm.ClassReader.accept(ClassReader.java:651) [16Nov2019 09:48:58.762] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at org.objectweb.asm.ClassReader.accept(ClassReader.java:391) [16Nov2019 09:48:58.762] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at cpw.mods.modlauncher.TransformerClassWriter.computeHierarchy(TransformerClassWriter.java:83) [16Nov2019 09:48:58.763] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at cpw.mods.modlauncher.TransformerClassWriter.access$100(TransformerClassWriter.java:35) [16Nov2019 09:48:58.764] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at cpw.mods.modlauncher.TransformerClassWriter$SuperCollectingVisitor.visit(TransformerClassWriter.java:129) [16Nov2019 09:48:58.765] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at org.objectweb.asm.ClassReader.accept(ClassReader.java:525) [16Nov2019 09:48:58.765] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at org.objectweb.asm.ClassReader.accept(ClassReader.java:391) [16Nov2019 09:48:58.766] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at cpw.mods.modlauncher.TransformerClassWriter.computeHierarchy(TransformerClassWriter.java:83) [16Nov2019 09:48:58.766] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at cpw.mods.modlauncher.TransformerClassWriter.access$100(TransformerClassWriter.java:35) [16Nov2019 09:48:58.767] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at cpw.mods.modlauncher.TransformerClassWriter$SuperCollectingVisitor.visit(TransformerClassWriter.java:129) [16Nov2019 09:48:58.768] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at org.objectweb.asm.ClassReader.accept(ClassReader.java:525) [16Nov2019 09:48:58.768] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at org.objectweb.asm.ClassReader.accept(ClassReader.java:391) [16Nov2019 09:48:58.769] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at cpw.mods.modlauncher.TransformerClassWriter.computeHierarchy(TransformerClassWriter.java:83) [16Nov2019 09:48:58.770] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at cpw.mods.modlauncher.TransformerClassWriter.access$100(TransformerClassWriter.java:35) [16Nov2019 09:48:58.770] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at cpw.mods.modlauncher.TransformerClassWriter$SuperCollectingVisitor.visit(TransformerClassWriter.java:129) [16Nov2019 09:48:58.771] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at org.objectweb.asm.ClassReader.accept(ClassReader.java:525) [16Nov2019 09:48:58.772] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at org.objectweb.asm.ClassReader.accept(ClassReader.java:391) [16Nov2019 09:48:58.772] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at cpw.mods.modlauncher.TransformerClassWriter.computeHierarchy(TransformerClassWriter.java:83) [16Nov2019 09:48:58.773] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at cpw.mods.modlauncher.TransformerClassWriter.getSupers(TransformerClassWriter.java:54) [16Nov2019 09:48:58.774] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at cpw.mods.modlauncher.TransformerClassWriter.getCommonSuperClass(TransformerClassWriter.java:99) [16Nov2019 09:48:58.774] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at org.objectweb.asm.SymbolTable.addMergedType(SymbolTable.java:1209) [16Nov2019 09:48:58.775] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at org.objectweb.asm.Frame.merge(Frame.java:1293) [16Nov2019 09:48:58.775] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at org.objectweb.asm.Frame.merge(Frame.java:1175) [16Nov2019 09:48:58.776] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at org.objectweb.asm.MethodWriter.computeAllFrames(MethodWriter.java:1604) [16Nov2019 09:48:58.777] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at org.objectweb.asm.MethodWriter.visitMaxs(MethodWriter.java:1540) [16Nov2019 09:48:58.778] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at org.objectweb.asm.tree.MethodNode.accept(MethodNode.java:807) [16Nov2019 09:48:58.778] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at org.objectweb.asm.tree.MethodNode.accept(MethodNode.java:687) [16Nov2019 09:48:58.779] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at org.objectweb.asm.tree.ClassNode.accept(ClassNode.java:436) [16Nov2019 09:48:58.779] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at cpw.mods.modlauncher.ClassTransformer.transform(ClassTransformer.java:120) [16Nov2019 09:48:58.780] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at cpw.mods.modlauncher.TransformingClassLoader$DelegatedClassLoader.findClass(TransformingClassLoader.java:236) [16Nov2019 09:48:58.781] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at cpw.mods.modlauncher.TransformingClassLoader.loadClass(TransformingClassLoader.java:127) [16Nov2019 09:48:58.781] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at cpw.mods.modlauncher.TransformingClassLoader.loadClass(TransformingClassLoader.java:97) [16Nov2019 09:48:58.782] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521) [16Nov2019 09:48:58.783] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: at net.minecraft.client.main.Main.main(SourceFile:155) [16Nov2019 09:48:58.783] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: ... 10 more I don't have any texture pack or mods, can you help me? Thanks in advance SnowCode PS: I run Forge on Ubuntu Linux