fix: 兼容高版本 PHP 下 Api 基类构造函数参数声明

application/common/controller/Api.php

@@ -69,7 +69,7 @@ class Api
      * @access public
      * @param Request $request Request 对象
      */
-    public function __construct(Request $request = null)
+    public function __construct($request = null)
     {
         $this->request = is_null($request) ? Request::instance() : $request;