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java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)[?:1.8.0_91] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)[?:1.8.0_91] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)[?:1.8.0_91] at java.lang.reflect.Method.invoke(Unknown Source)[?:1.8.0_91] at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)[launchwrapper-1.12.jar:?] at net.minecraft.launchwrapper.Launch.main(Launch.java:28)[launchwrapper-1.12.jar:?]Caused by: java.lang.NoClassDefFoundError: net/minecraft/entity/player/EntityPlayer at net.minecraft.client.main.Main.main(SourceFile:72)[Main.class:?] ... 6 moreCaused by: java.lang.ClassNotFoundException: net.minecraft.entity.player.EntityPlayer at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)[launchwrapper-1.12.jar:?] at java.lang.ClassLoader.loadClass(Unknown Source)[?:1.8.0_91] at java.lang.ClassLoader.loadClass(Unknown Source)[?:1.8.0_91] ... 7 moreCaused by: java.lang.NoClassDefFoundError: net/minecraft/entity/EntityLivingBase at java.lang.ClassLoader.defineClass1(Native Method)[?:1.8.0_91] at java.lang.ClassLoader.defineClass(Unknown Source)[?:1.8.0_91] at java.security.SecureClassLoader.defineClass(Unknown Source)[?:1.8.0_91] at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)[launchwrapper-1.12.jar:?] ... 9 moreCaused by: java.lang.ClassNotFoundException: net.minecraft.entity.EntityLivingBase at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)[launchwrapper-1.12.jar:?] at java.lang.ClassLoader.loadClass(Unknown Source)[?:1.8.0_91] at java.lang.ClassLoader.loadClass(Unknown Source)[?:1.8.0_91] ... 13 moreCaused by: java.lang.NoClassDefFoundError: net/minecraft/entity/Entity at java.lang.ClassLoader.defineClass1(Native Method)[?:1.8.0_91] at java.lang.ClassLoader.defineClass(Unknown Source)[?:1.8.0_91] at java.security.SecureClassLoader.defineClass(Unknown Source)[?:1.8.0_91] at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)[launchwrapper-1.12.jar:?] ... 15 moreCaused by: java.lang.ClassNotFoundException: net.minecraft.entity.Entity at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)[launchwrapper-1.12.jar:?] at java.lang.ClassLoader.loadClass(Unknown Source)[?:1.8.0_91] at java.lang.ClassLoader.loadClass(Unknown Source)[?:1.8.0_91] ... 19 moreCaused by: java.lang.ClassFormatError: Duplicate method name&signature in class file net/minecraft/entity/Entity at java.lang.ClassLoader.defineClass1(Native Method)[?:1.8.0_91] at java.lang.ClassLoader.defineClass(Unknown Source)[?:1.8.0_91] at java.security.SecureClassLoader.defineClass(Unknown Source)[?:1.8.0_91] at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)[launchwrapper-1.12.jar:?] ... 21 more