u

app/Helpers/helpers.php

@@ -3,12 +3,12 @@
 use Illuminate\Support\Facades\Lang;
 
 if (!function_exists('list_to_tree')) {
-    function list_to_tree($elements, $parentKey = "parent_id", $parentId = 0):array
+    function list_to_tree($elements, $parentKey = "parent_id", $parentId = 0): array
     {
         $branch = [];
         foreach ($elements as $element) {
             if ($element[$parentKey] == $parentId) {
-                $children = list_to_tree($elements, $element['id']);
+                $children = list_to_tree($elements, $parentKey, $element['id']);
                 if ($children) {
                     $element['children'] = $children;
                 }