TypeError: null is not an object (evaluating 'document.getElementById('data-mz-preload-apicontext').

[naveen vemuri]

17  0x7fea7e9cf0e5 [0x7fea7e9cf0e5]
PhantomJS has crashed. Please read the bug reporting guide at
<http://phantomjs.org/bug-reporting.html> and file a bug report.
FATAL: command execution failed
java.io.EOFException
	at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2638)
	at java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:3113)
	at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:853)
	at java.io.ObjectInputStream.<init>(ObjectInputStream.java:349)
	at hudson.remoting.ObjectInputStreamEx.<init>(ObjectInputStreamEx.java:48)
	at hudson.remoting.AbstractSynchronousByteArrayCommandTransport.read(AbstractSynchronousByteArrayCommandTransport.java:35)
	at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:59)
Caused: java.io.IOException: Unexpected termination of the channel
	at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:73)
Caused: java.io.IOException: Backing channel 'Ubuntu 14.04 amd64 (i-095eb0ff092a95172)' is disconnected.
	at hudson.remoting.RemoteInvocationHandler.channelOrFail(RemoteInvocationHandler.java:193)
	at hudson.remoting.RemoteInvocationHandler.invoke(RemoteInvocationHandler.java:260)
	at com.sun.proxy.$Proxy108.isAlive(Unknown Source)
	at hudson.Launcher$RemoteLauncher$ProcImpl.isAlive(Launcher.java:1138)
	at hudson.Launcher$RemoteLauncher$ProcImpl.join(Launcher.java:1130)
	at hudson.tasks.CommandInterpreter.join(CommandInterpreter.java:155)
	at hudson.tasks.CommandInterpreter.perform(CommandInterpreter.java:109)
	at hudson.tasks.CommandInterpreter.perform(CommandInterpreter.java:66)
	at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
	at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:736)
	at hudson.model.Build$BuildExecution.build(Build.java:206)
	at hudson.model.Build$BuildExecution.doRun(Build.java:163)
	at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:496)
	at hudson.model.Run.execute(Run.java:1724)
	at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
	at hudson.model.ResourceController.execute(ResourceController.java:97)
	at hudson.model.Executor.run(Executor.java:419)
Build step 'Execute shell' marked build as failure
Started calculate disk usage of build
Finished Calculation of disk usage of build in 0 seconds
Finished: FAILURE

Getting this while trying to build the job, i need someone to help to figure out this.