java.lang.ClassNotFoundException: net.minecraftforge.fml.common.launcher.FMLTweaker

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Samebug tips

,
Expert tip

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

,
Expert tip

A few things cause this exception:
1) Check if you have all jars and if they're in the correct path.
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.

Solutions on the web

via Arqade by NethWar070802
, 10 months ago
net.minecraftforge.fml.common.launcher.FMLTweaker
via GitHub by Gunscrusader
, 1 year ago
net.minecraftforge.fml.common.launcher.FMLTweaker
via enginehub.org by Unknown author, 1 year ago
java.lang.ClassNotFoundException: net.minecraftforge.fml.common.launcher.FMLTweaker
at java.net.URLClassLoader$1.run(URLClassLoader.java:372)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:344)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:98)

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