Fix Location parent different validation on new location creation.

app/Http/Controllers/LocationsController.php

@@ -67,6 +67,7 @@ public function store(ImageUploadRequest $request)
     {
         $this->authorize('create', Location::class);
         $location = new Location();
+        $location->id               = null; // This is required to make Laravels different validation work, it errors if the parameter doesn't exist (maybe a bug)?
         $location->name             = $request->input('name');
         $location->parent_id        = $request->input('parent_id', null);
         $location->currency         = $request->input('currency', '$');