toggleFlash getting null pointer error

[Miteshmakwana73]

i am trying to turn on/off flashligh on click but getting this error

08-01 17:06:32.231 28783-28783/com.rayvatapps.launcher E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.rayvatapps.launcher, PID: 28783
    java.lang.NullPointerException: Attempt to invoke interface method 'boolean com.noob.noobcameraflash.Utilities.CameraFlashUtility.isFlashOn()' on a null object reference
        at com.noob.noobcameraflash.managers.NoobCameraManager.isFlashOn(NoobCameraManager.java:55)
        at com.noob.noobcameraflash.managers.NoobCameraManager.toggleFlash(NoobCameraManager.java:67)
        at com.rayvatapps.launcher.MainActivity$10.onClick(MainActivity.java:304)
        at android.view.View.performClick(View.java:5647)
        at android.view.View$PerformClick.run(View.java:22465)
        at android.os.Handler.handleCallback(Handler.java:754)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at android.os.Looper.loop(Looper.java:163)
        at android.app.ActivityThread.main(ActivityThread.java:6239)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:794)