java.lang.RuntimeException: Unable to pause activity {com.busticketing.busticketing/com.busticketing.busticketing.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void me.dm7.barcodescanner.zxing.ZXingScannerView.stopCamera()' on a null object reference

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    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke virtual method 'void me.dm7.barcodescanner.zxing.ZXingScannerView.stopCamera()' on a null object reference

      at com.busticketing.busticketing.MainActivity.onPause()
    2. com.busticketing.busticketing
      MainActivity.onPause
      1. com.busticketing.busticketing.MainActivity.onPause(MainActivity.java:160)
      1 frame
    3. Android Platform
      ActivityThread.performPauseActivity
      1. android.app.Activity.performPause(Activity.java:6373)
      2. android.app.Instrumentation.callActivityOnPause(Instrumentation.java:1308)
      3. android.app.ActivityThread.performPauseActivity(ActivityThread.java:3645)
      3 frames