Crash Android on Bar code scan

[mororc]

Android 5.1.1

java.lang.NullPointerException: Attempt to invoke virtual method 'void android.hardware.Camera.setDisplayOrientation(int)' on a null object reference at org.cloudsky.cordovaPlugins.ZBarScannerActivity.setCameraDisplayOrientation(ZBarScannerActivity.java:247) at org.cloudsky.cordovaPlugins.ZBarScannerActivity.tryStartPreview(ZBarScannerActivity.java:525) at org.cloudsky.cordovaPlugins.ZBarScannerActivity.surfaceCreated(ZBarScannerActivity.java:279) at android.view.SurfaceView.updateWindow(SurfaceView.java:580) at android.view.SurfaceView$3.onPreDraw(SurfaceView.java:176) at android.view.ViewTreeObserver.dispatchOnPreDraw(ViewTreeObserver.java:944) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1970) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1061) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5891) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:767) at android.view.Choreographer.doCallbacks(Choreographer.java:580) at android.view.Choreographer.doFrame(Choreographer.java:550) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753) at android.os.Handler.handleCallback(Handler.java:739) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5294) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699)