Exception in thread "main" java.lang.NoClassDefFoundError: backtype/storm/command/config_value
Caused by: java.lang.ClassNotFoundException: backtype.storm.command.config_value
	at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
Could not find the main class: backtype.storm.command.config_value. Program will exit.
Traceback (most recent call last):
  File "/usr/bin/storm", line 79, in <module>
    COMMANDS[COMMAND](*ARGS)
  File "/usr/bin/storm", line 51, in jar
    prefix="export STORM_JAR=" + jarfile + ";")
  File "/usr/bin/storm", line 38, in exec_storm_class
    command = prefix + " java " + jvmtype + " -Djava.library.path=" + nativepath + " " + childopts + " -cp " + get_classpath(extrajars) + " " + klass + " " + " ".join(args)
TypeError: cannot concatenate 'str' and 'NoneType' objects