Android Question activity_permissionresult was not found.

Private Sub CheckAndRequestNotificationPermission As ResumableSub
    Dim p As Phone
    If p.SdkVersion < 33 Then Return True
    Dim ctxt As JavaObject
    ctxt.InitializeContext
    Dim targetSdkVersion As Int = ctxt.RunMethodJO("getApplicationInfo", Null).GetField("targetSdkVersion")
    If targetSdkVersion < 33 Then Return True
    Dim NotificationsManager As JavaObject = ctxt.RunMethod("getSystemService", Array("notification"))
    Dim NotificationsEnabled As Boolean = NotificationsManager.RunMethod("areNotificationsEnabled", Null)
    If NotificationsEnabled Then Return True
    Dim rp As RuntimePermissions
    rp.CheckAndRequest(rp.PERMISSION_POST_NOTIFICATIONS)
    Wait For Activity_PermissionResult (Permission As String, Result As Boolean) 'change to Activity_PermissionResult if non-B4XPages.
    
    Return Result
End Sub

main$ResumeMessagerun (java line: 313)
java.lang.Exception: Sub activity_permissionresult was not found.
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:227)
    at anywheresoftware.b4a.BA$2.run(BA.java:395)
    at anywheresoftware.b4a.BA.setActivityPaused(BA.java:467)
    at com.mindgames.puztarget.main$ResumeMessage.run(main.java:313)
    at android.os.Handler.handleCallback(Handler.java:959)
    at android.os.Handler.dispatchMessage(Handler.java:100)
    at android.os.Looper.loopOnce(Looper.java:257)
    at android.os.Looper.loop(Looper.java:342)
    at android.app.ActivityThread.main(ActivityThread.java:9614)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:619)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:929)