Warning: require_once(./config.php): failed to open stream: No such file or directory in D:\wwwroot\www.yy5168.com\wwwroot\start.php on line 2

Fatal error: require_once(): Failed opening required './config.php' (include_path='.;C:\php\pear') in D:\wwwroot\www.yy5168.com\wwwroot\start.php on line 2