Minecrafter200

what does this means? : [21:44:38] [main/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: Caused by: java.lang.ClassNotFoundException: codechicken.core.launch.CodeChickenCorePlugin

I Tried Using Minecraft Forge Without mods and it worked, i used Pixelmon And It Doesnt load!

When I Try To Open Minecraft Forge This Appears : 2017-08-13 20:48:53,274 WARN Unable to instantiate org.fusesource.jansi.WindowsAnsiOutputStream 2017-08-13 20:48:53,276 WARN Unable to instantiate org.fusesource.jansi.WindowsAnsiOutputStream [20:48:53] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker [20:48:53] [main/INFO] [LaunchWrapper]: Using primary tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker [20:48:53] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLTweaker [20:48:53] [main/INFO] [FML]: Forge Mod Loader version 12.18.1.2011 for Minecraft 1.10.2 loading [20:48:53] [main/INFO] [FML]: Java is Java HotSpot(TM) Client VM, version 1.8.0_144, running on Windows 7:x86:6.1, installed at C:\Program Files\Java\jre1.8.0_144 [20:48:53] [main/WARN] [FML]: The coremod codechicken.nei.asm.NEICorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft [20:48:53] [main/INFO] [FML]: Loading tweaker optifine.OptiFineForgeTweaker from OptiFine_1.10.2_HD_U_C2.jar [20:48:53] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker [20:48:53] [main/INFO] [LaunchWrapper]: Loading tweak class name optifine.OptiFineForgeTweaker [20:48:53] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLDeobfTweaker [20:48:53] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker [20:48:53] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker [20:48:53] [main/INFO] [LaunchWrapper]: Calling tweak class optifine.OptiFineForgeTweaker [20:48:53] [main/INFO] [STDOUT]: [optifine.OptiFineForgeTweaker:dbg:56]: OptiFineForgeTweaker: acceptOptions [20:48:53] [main/INFO] [STDOUT]: [optifine.OptiFineForgeTweaker:dbg:56]: OptiFineForgeTweaker: injectIntoClassLoader [20:48:54] [main/INFO] [STDOUT]: [optifine.OptiFineClassTransformer:dbg:266]: OptiFine ClassTransformer [20:48:54] [main/INFO] [STDOUT]: [optifine.OptiFineClassTransformer:dbg:266]: OptiFine URL: file:/C:/Users/benja/AppData/Roaming/.minecraft/mods/OptiFine_1.10.2_HD_U_C2.jar [20:48:54] [main/INFO] [STDOUT]: [optifine.OptiFineClassTransformer:dbg:266]: OptiFine ZIP file: C:\Users\benja\AppData\Roaming\.minecraft\mods\OptiFine_1.10.2_HD_U_C2.jar [20:48:54] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper [20:48:57] [main/INFO] [FML]: Found valid fingerprint for Minecraft Forge. Certificate fingerprint e3c3d50c7c986df74c645c0ac54639741c90a557 [20:48:57] [main/INFO] [FML]: Found valid fingerprint for Minecraft. Certificate fingerprint cd99959656f753dc28d863b46769f7f8fbaefcfc [20:48:57] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper [20:48:57] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper Exception in thread "main" [20:48:57] [main/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: java.lang.NoClassDefFoundError: codechicken/core/launch/CodeChickenCorePlugin [20:48:57] [main/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: at codechicken.nei.asm.NEICorePlugin.getASMTransformerClass(NEICorePlugin.java:17) [20:48:57] [main/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: at net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper.injectIntoClassLoader(CoreModManager.java:128) [20:48:57] [main/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: at net.minecraft.launchwrapper.Launch.launch(Launch.java:115) [20:48:57] [main/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [20:48:57] [main/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: Caused by: java.lang.ClassNotFoundException: codechicken.core.launch.CodeChickenCorePlugin [20:48:57] [main/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191) [20:48:57] [main/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: at java.lang.ClassLoader.loadClass(Unknown Source) [20:48:57] [main/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: at java.lang.ClassLoader.loadClass(Unknown Source) [20:48:57] [main/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: ... 4 more [20:48:57] [main/INFO] [STDERR]: [java.lang.Throwable:printStackTrace:-1]: Caused by: java.lang.NullPointerException [20:48:57] [main/INFO] [STDERR]: [java.lang.Throwable:printStackTrace:-1]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182) [20:48:57] [main/INFO] [STDERR]: [java.lang.Throwable:printStackTrace:-1]: ... 6 more

Please help !!!!