Fixed undefined variable

src/Database/Seeds/EnableAuditer.php

@@ -92,7 +92,7 @@ class EnableAuditer extends BaseSeed
      */
     protected function saveRoles(array &$roles)
     {
-        foreach ($roles as $role) {
+        foreach ($roles as $slug => $role) {
             // Trying to find if the role already exist
             $existingRole = Role::where(['slug' => $role->slug])->first();