add

server/app/Http/Controllers/Api/V1/InteractionController.php

@@ -462,7 +462,7 @@ class InteractionController extends Controller
         if (empty($interaction)) return $this->error(ErrorCode::INTERACTION_NOT_EXIST);
         $interaction->black_list = $user_id.',';
         $ok = $interaction->save();
-        if ($ok) return $this->api();
+        if ($ok) return $this->api('');
         return $this->error(ErrorCode::OPERATION_FAILED);
     }
 }