Warning: require_once(./portal.php): failed to open stream: No such file or directory in D:\amp\apache\htdocs\shzk\changning\index.php on line 6

Fatal error: require_once(): Failed opening required './portal.php' (include_path='.;C:\php\pear') in D:\amp\apache\htdocs\shzk\changning\index.php on line 6