fatal error in Launching Mincraft

attached the Game output:
[21:35:24] [Client thread/INFO]: Setting user: AC2038
[21:35:24] [Client thread/INFO]: (Session ID is token:9e20a04edcab4ec68039cd8a6707afda:f51ceb87b27b486294935fd77e534d4b)
Exception in thread "Client thread" java.lang.NoClassDefFoundError: baf
at atr.R(SourceFile:932)
at od.c(SourceFile:477)
at bsu.<init>(SourceFile:293)
at net.minecraft.client.main.Main.main(SourceFile:120)
Caused by: java.lang.ClassNotFoundException: baf
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 4 more
Caused by: java.util.zip.ZipException: ZIP_Read: error reading zip file
at java.util.zip.ZipFile.read(Native Method)
at java.util.zip.ZipFile.access$1400(Unknown Source)
at java.util.zip.ZipFile$ZipFileInputStream.read(Unknown Source)
at java.util.zip.ZipFile$ZipFileInflaterInputStream.fill(Unknown Source)
at java.util.zip.InflaterInputStream.read(Unknown Source)
at java.util.jar.JarVerifier$VerifierStream.read(Unknown Source)
at sun.misc.Resource.getBytes(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
... 11 more
[21:35:39] [Client Shutdown Thread/INFO]: Stopping server