On Capturing picture app is crashing

[adarshkumarshiva]

on calling : camera.takePicture(null, null, pictureCallback);
the app is crashing
04-17 11:57:35.281 25292-25292/com.jjoe64.motiondetection E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.jjoe64.motiondetection, PID: 25292
java.lang.RuntimeException: takePicture failed
at android.hardware.Camera.native_takePicture(Native Method)
at android.hardware.Camera.takePicture(Camera.java:1865)
at android.hardware.Camera.takePicture(Camera.java:1810)
at com.jjoe64.motiondetection.MainActivity.captureImageOnMotionDetected(MainActivity.java:73)
at com.jjoe64.motiondetection.MainActivity$1.onMotionDetected(MainActivity.java:52)
at com.jjoe64.motiondetection.motiondetection.MotionDetector$MotionDetectorThread$2.run(MotionDetector.java:55)
at android.os.Handler.handleCallback(Handler.java:822)
at android.os.Handler.dispatchMessage(Handler.java:104)
at android.os.Looper.loop(Looper.java:207)
at android.app.ActivityThread.main(ActivityThread.java:5811)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:681)
04-17 11:57:39.875 25292-25308/com.jjoe64.motiondetection W/art: Suspending all threads took: 13.631ms
04-17 11:57:44.306 25292-25306/com.jjoe64.motiondetection I/System: FinalizerDaemon: finalize objects = 161