java.lang.NullPointerException: Attempt to invoke virtual method 'boolean java.lang.String.equals(java.lang.Object)' on a null object reference
	at com.entitcs.office_attendance.CRM.CRM_For_Customer_Visits.onDestroy(CRM_For_Customer_Visits.java:1475)
	at androidx.fragment.app.Fragment.performDestroy(Fragment.java:3219)
	at androidx.fragment.app.FragmentStateManager.destroy(FragmentStateManager.java:774)
	at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:350)
	at androidx.fragment.app.SpecialEffectsController$FragmentStateManagerOperation.complete(SpecialEffectsController.java:745)
	at androidx.fragment.app.SpecialEffectsController$Operation.completeSpecialEffect(SpecialEffectsController.java:672)
	at androidx.fragment.app.DefaultSpecialEffectsController$SpecialEffectsInfo.completeSpecialEffect(DefaultSpecialEffectsController.java:776)
	at androidx.fragment.app.DefaultSpecialEffectsController.startAnimations(DefaultSpecialEffectsController.java:147)
	at androidx.fragment.app.DefaultSpecialEffectsController.executeOperations(DefaultSpecialEffectsController.java:120)
	at androidx.fragment.app.SpecialEffectsController.executePendingOperations(SpecialEffectsController.java:297)
	at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:2202)
	at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:2100)
	at androidx.fragment.app.FragmentManager.popBackStackImmediate(FragmentManager.java:781)
	at androidx.fragment.app.FragmentManager.popBackStackImmediate(FragmentManager.java:692)
	at androidx.fragment.app.FragmentManager.handleOnBackPressed(FragmentManager.java:664)
	at androidx.fragment.app.FragmentManager$1.handleOnBackPressed(FragmentManager.java:436)
	at androidx.activity.OnBackPressedDispatcher.onBackPressed(OnBackPressedDispatcher.java:192)
	at androidx.activity.ComponentActivity.onBackPressed(ComponentActivity.java:552)
	at com.entitcs.office_attendance.CRM.InvoiceReport.onBackPressed(InvoiceReport.java:1432)
	at com.entitcs.office_attendance.CRM.CRM_For_Customer_Visits$5.onClick(CRM_For_Customer_Visits.java:442)
	at android.view.View.performClick(View.java:7156)
	at android.view.View.performClickInternal(View.java:7129)
	at android.view.View.access$3500(View.java:803)
	at android.view.View$PerformClick.run(View.java:27543)
	at android.os.Handler.handleCallback(Handler.java:883)
	at android.os.Handler.dispatchMessage(Handler.java:100)
	at android.os.Looper.loop(Looper.java:214)
	at android.app.ActivityThread.main(ActivityThread.java:7436)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:980)