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:1474)
	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$1.handleOnBackPressed(FragmentManager.java:436)
	at androidx.activity.OnBackPressedDispatcher.onBackPressed(OnBackPressedDispatcher.java:192)
	at androidx.activity.ComponentActivity.onBackPressed(ComponentActivity.java:552)
	at com.entitcs.office_attendance.CRM.InvoiceReport.onBackPressed(InvoiceReport.java:1432)
	at android.app.Activity.onKeyUp(Activity.java:3641)
	at android.view.KeyEvent.dispatch(KeyEvent.java:2844)
	at android.app.Activity.dispatchKeyEvent(Activity.java:3958)
	at androidx.core.app.ComponentActivity.superDispatchKeyEvent(ComponentActivity.java:122)
	at androidx.core.view.KeyEventDispatcher.dispatchKeyEvent(KeyEventDispatcher.java:84)
	at androidx.core.app.ComponentActivity.dispatchKeyEvent(ComponentActivity.java:140)
	at androidx.appcompat.app.AppCompatActivity.dispatchKeyEvent(AppCompatActivity.java:599)
	at androidx.appcompat.view.WindowCallbackWrapper.dispatchKeyEvent(WindowCallbackWrapper.java:59)
	at androidx.appcompat.app.AppCompatDelegateImpl$AppCompatWindowCallback.dispatchKeyEvent(AppCompatDelegateImpl.java:3068)
	at androidx.appcompat.view.WindowCallbackWrapper.dispatchKeyEvent(WindowCallbackWrapper.java:59)
	at com.android.internal.policy.DecorView.dispatchKeyEvent(DecorView.java:367)
	at android.view.ViewRootImpl$ViewPostImeInputStage.processKeyEvent(ViewRootImpl.java:5600)
	at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:5463)
	at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4966)
	at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5019)
	at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:4985)
	at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:5125)
	at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:4993)
	at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:5182)
	at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4966)
	at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5019)
	at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:4985)
	at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:4993)
	at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4966)
	at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:5019)
	at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:4985)
	at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:5158)
	at android.view.ViewRootImpl$ImeInputStage.onFinishedInputEvent(ViewRootImpl.java:5323)
	at android.view.inputmethod.InputMethodManager$PendingEvent.run(InputMethodManager.java:3064)
	at android.view.inputmethod.InputMethodManager.invokeFinishedInputEventCallback(InputMethodManager.java:2607)
	at android.view.inputmethod.InputMethodManager.finishedInputEvent(InputMethodManager.java:2598)
	at android.view.inputmethod.InputMethodManager$ImeInputEventSender.onInputEventFinished(InputMethodManager.java:3041)
	at android.view.InputEventSender.dispatchInputEventFinished(InputEventSender.java:143)
	at android.os.MessageQueue.nativePollOnce(Native Method)
	at android.os.MessageQueue.next(MessageQueue.java:336)
	at android.os.Looper.loop(Looper.java:174)
	at android.app.ActivityThread.main(ActivityThread.java:7436)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:980)