java.lang.ClassNotFoundException

cpw.mods.fml.common.launcher.FMLTweaker

Samebug tips9

You need to add httpcore to your dependencies. Try adding version 4.3 or further.


rafaelrafael

A few things cause this exception: 1) Check if you have all jars and if they're in the correct path when running. 2) Your classpath might be broken, you can define it in the command line with "java -cp yourClassPath" or at your IDE if you're using one.


rafaelrafael

Don't give up yet. Our experts can help. Paste your full stack trace to get a solution.

Solutions on the web17798

  • via Unknown by Unknown author,
  • via GitHub by UnvoicedTiger6
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  • via GitHub by Blackmak
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  • Stack trace

    • java.lang.ClassNotFoundException: cpw.mods.fml.common.launcher.FMLTweaker at java.net.URLClassLoader$1.run(URLClassLoader.java:372)[?:1.8.0_25] at java.net.URLClassLoader$1.run(URLClassLoader.java:361)[?:1.8.0_25] at java.security.AccessController.doPrivileged(Native Method)[?:1.8.0_25] at java.net.URLClassLoader.findClass(URLClassLoader.java:360)[?:1.8.0_25] at java.lang.ClassLoader.loadClass(ClassLoader.java:424)[?:1.8.0_25] at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)[?:1.8.0_25] at java.lang.ClassLoader.loadClass(ClassLoader.java:357)[?:1.8.0_25] at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:106)[launchwrapper-1.12.jar:?] at java.lang.ClassLoader.loadClass(ClassLoader.java:424)[?:1.8.0_25] at java.lang.ClassLoader.loadClass(ClassLoader.java:357)[?:1.8.0_25] at java.lang.Class.forName0(Native Method)[?:1.8.0_25] at java.lang.Class.forName(Class.java:344)[?:1.8.0_25] at net.minecraft.launchwrapper.Launch.launch(Launch.java:98)[launchwrapper-1.12.jar:?] at net.minecraft.launchwrapper.Launch.main(Launch.java:28)[launchwrapper-1.12.jar:?]

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