Update common.php

function/common.php

@@ -239,7 +239,7 @@ function message($message, $title = 'Message', $statusCode = 200)
 function needUpdate()
 {
     if ($_SERVER['admin']) {
-        $current_ver = file_get_contents(__DIR__ . '/version');
+        $current_ver = file_get_contents(__DIR__ . '/../version');
         $current_ver = substr($current_ver, strpos($current_ver, '.')+1);
         $current_ver = explode(urldecode('%0A'),$current_ver)[0];
         $current_ver = explode(urldecode('%0D'),$current_ver)[0];