WIP: And goes on

src/Menu/AdminMenuBuilder.php

@@ -144,7 +144,7 @@ class AdminMenuBuilder extends AbstractMenuBuilder
         $menu->addChild('zurück zur Übersicht', [
             'route' => 'app_admin_teamer_index',
             'extras' => [
-                'icon' => 'back',
+                'icon' => 'arrow-left',
             ],
         ]);