Error occurred during application-update

Error occurred during application-update (11)
java.lang.NullPointerException
at V.H.a(SourceFile:323)
at V.H.a(SourceFile:296)
at V.H.a(SourceFile:292)
at ag.b.a(SourceFile:183)
at ag.b.b(SourceFile:168)
at au.a.a(SourceFile:1224)
at commons.JIWApplication.update(SourceFile:120)
at com.jme3.system.lwjgl.LwjglAbstractDisplay.runLoop(LwjglAbstractDisplay.java:152)
at com.jme3.system.lwjgl.LwjglDisplay.runLoop(LwjglDisplay.java:192)
at com.jme3.system.lwjgl.LwjglAbstractDisplay.run(LwjglAbstractDisplay.java:233)
at java.lang.Thread.run(Unknown Source)