load_string()问题?

[kyaky]

[2017-03-29 09:39:58][INFO] 请扫描二维码登录 [2017-03-29 09:40:04][INFO] 请点击确认登录微信 PHP Fatal error: Uncaught Error: Call to undefined function Hanson\Vbot\Core\simplexml_load_string() in /root/vendor/hanson/vbot/src/Core/Server.php:243 Stack trace:

0 /root/vendor/hanson/vbot/src/Core/Server.php(139): Hanson\Vbot\Core\Server->login()

1 /root/vendor/hanson/vbot/src/Core/Server.php(81): Hanson\Vbot\Core\Server->prepare()

2 /root/vendor/hanson/vbot/example/index.php(213): Hanson\Vbot\Core\Server->run()

3 {main}

thrown in /root/vendor/hanson/vbot/src/Core/Server.php on line 243 root@ubuntu:~/vendor/hanson/vbot#

[Hanson]

请安装 SimpleXML 拓展 http://php.net/manual/zh/book.simplexml.php