我在 Magento 中的 SoapClient 遇到问题，导致外部模块无法正常工作。该模块正在另一个 Magento 安装上工作，所以我猜它与我的 magento 安装有关。
在我的 magento 日志中，我看到以下错误：
2012-07-09T16:52:40+00:00 ERR (3): Warning: include(SoapClient.php): failed to open stream: No such file or directory in /var/www/vhosts/domain.com/httpdocs/lib/Varien/Autoload.php on line 93
2012-07-09T16:52:40+00:00 ERR (3): Warning: include(SoapClient.php): failed to open stream: No such file or directory in /var/www/vhosts/domain.com/httpdocs/lib/Varien/Autoload.php on line 93
2012-07-09T16:52:40+00:00 ERR (3): Warning: include(): Failed opening ‘SoapClient.php’ for inclusion (include_path=’/var/www/vhosts/domain.com/httpdocs/app/code/local:/var/www/vhosts/domain.com/httpdocs/app/code/community:/var/www/vhosts/domain.com/httpdocs/app/code/core:/var/www/vhosts/domain.com/httpdocs/lib:.:/usr/share/pear:/usr/share/php’) in /var/www/vhosts/domain.com/httpdocs/lib/Varien/Autoload.php on line 93
我搜索了这个论坛和谷歌，发现它与 open_basedir 限制有关。我已按照与这些主题相关的所有说明进行操作，但仍然遇到上述错误。
有人可以帮忙吗？