java.lang.NoClassDefFoundError: net/minecraftforge/fml/relauncher/IFMLLoadingPlugin

GitHub | Herocraftgm | 2 months ago
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Root Cause Analysis

  1. java.lang.NullPointerException

    No message provided

    at net.minecraft.launchwrapper.LaunchClassLoader.findClass()
  2. Minecraft
    LaunchClassLoader.findClass
    1. net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)[launchwrapper-1.12.jar:?]
    1 frame
  3. Java RT
    URLClassLoader.findClass
    1. java.lang.ClassLoader.loadClass(ClassLoader.java:424)[?:1.8.0_25]
    2. java.lang.ClassLoader.loadClass(ClassLoader.java:357)[?:1.8.0_25]
    3. java.lang.ClassLoader.defineClass1(Native Method)[?:1.8.0_25]
    4. java.lang.ClassLoader.defineClass(ClassLoader.java:760)[?:1.8.0_25]
    5. java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)[?:1.8.0_25]
    6. java.net.URLClassLoader.defineClass(URLClassLoader.java:455)[?:1.8.0_25]
    7. java.net.URLClassLoader.access$100(URLClassLoader.java:73)[?:1.8.0_25]
    8. java.net.URLClassLoader$1.run(URLClassLoader.java:367)[?:1.8.0_25]
    9. java.net.URLClassLoader$1.run(URLClassLoader.java:361)[?:1.8.0_25]
    10. java.security.AccessController.doPrivileged(Native Method)[?:1.8.0_25]
    11. java.net.URLClassLoader.findClass(URLClassLoader.java:360)[?:1.8.0_25]
    11 frames
  4. Minecraft
    LaunchClassLoader.findClass
    1. net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:117)[launchwrapper-1.12.jar:?]
    1 frame
  5. Java RT
    Class.forName
    1. java.lang.ClassLoader.loadClass(ClassLoader.java:424)[?:1.8.0_25]
    2. java.lang.ClassLoader.loadClass(ClassLoader.java:357)[?:1.8.0_25]
    3. java.lang.Class.forName0(Native Method)[?:1.8.0_25]
    4. java.lang.Class.forName(Class.java:344)[?:1.8.0_25]
    4 frames
  6. MC Forge
    FMLLaunchHandler.configureForClientLaunch
    1. cpw.mods.fml.relauncher.CoreModManager.loadCoreMod(CoreModManager.java:460)[forge-1.7.10-10.13.4.1614-1.7.10.jar:?]
    2. cpw.mods.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:389)[forge-1.7.10-10.13.4.1614-1.7.10.jar:?]
    3. cpw.mods.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:221)[forge-1.7.10-10.13.4.1614-1.7.10.jar:?]
    4. cpw.mods.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:90)[forge-1.7.10-10.13.4.1614-1.7.10.jar:?]
    5. cpw.mods.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:67)[forge-1.7.10-10.13.4.1614-1.7.10.jar:?]
    6. cpw.mods.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:34)[forge-1.7.10-10.13.4.1614-1.7.10.jar:?]
    6 frames
  7. cpw.mods.fml
    FMLTweaker.injectIntoClassLoader
    1. cpw.mods.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:126)[forge-1.7.10-10.13.4.1614-1.7.10.jar:?]
    1 frame
  8. Minecraft
    Launch.main
    1. net.minecraft.launchwrapper.Launch.launch(Launch.java:115)[launchwrapper-1.12.jar:?]
    2. net.minecraft.launchwrapper.Launch.main(Launch.java:28)[launchwrapper-1.12.jar:?]
    2 frames