Update:Fixed

src/Config/Register.php

@@ -17,14 +17,8 @@
  */
 namespace Qii\Config;
 
-use \Qii\Application;
 use \Qii\Autoloader\Psr4;
 
-use \Qii\Config\Register;
-use \Qii\Config\Consts;
-
-use \Qii\Exceptions\Variable;
-
 class Register
 {
 	const VERSION = '1.3';