Exception in thread "Client thread" java.lang.NoClassDefFoundError: io/netty/buffer/ByteBufOutputStream
at bss.<init>(SourceFile:170)
at net.minecraft.client.main.Main.main(SourceFile:124)
Caused by: java.lang.ClassNotFoundException: io.netty.buffer.ByteBufOutputStream
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
... 2 more