我在下订单时遇到错误。订单放置一半，然后我得到错误。我检查了 error.log 文件，
013-11-25 16:35:07 Error: [MissingConnectionException] Database connection "Mysql" is missing, or could not be created.
#0 /usr/local/pem/vhosts/262731/webspace/httpdocs/parceldirect.ie/lib/Cake/Model/Datasource/DboSource.php(261): Mysql->connect()
#1 /usr/local/pem/vhosts/262731/webspace/httpdocs/parceldirect.ie/lib/Cake/Model/ConnectionManager.php(101): DboSource->__construct(Array)
#2 /usr/local/pem/vhosts/262731/webspace/httpdocs/parceldirect.ie/lib/Cake/Model/Model.php(3164): ConnectionManager::getDataSource('default')
#3 /usr/local/pem/vhosts/262731/webspace/httpdocs/parceldirect.ie/lib/Cake/Model/Model.php(1096): Model->setDataSource('default')
#4 /usr/local/pem/vhosts/262731/webspace/httpdocs/parceldirect.ie/lib/Cake/Model/Model.php(3186): Model->setSource('baskets')
#5 /usr/local/pem/vhosts/262731/webspace/httpdocs/parceldirect.ie/lib/Cake/Model/Model.php(2637): Model->getDataSource()
#6 /usr/local/pem/vhosts/262731/webspace/httpdocs/parceldirect.ie/app/Model/Basket.php(24): Model->find('first', Array)
#7 /usr/local/pem/vhosts/262731/webspace/httpdocs/parceldirect.ie/app/Controller/AppController.php(53): Basket->getSessionDetails('c71b56ada66fd45...')
#8 [internal function]: AppController->beforeFilter(Object(CakeEvent))
#9 /usr/local/pem/vhosts/262731/webspace/httpdocs/parceldirect.ie/lib/Cake/Event/CakeEventManager.php(246): call_user_func(Array, Object(CakeEvent))
#10 /usr/local/pem/vhosts/262731/webspace/httpdocs/parceldirect.ie/lib/Cake/Controller/Controller.php(669): CakeEventManager->dispatch(Object(CakeEvent))
#11 /usr/local/pem/vhosts/262731/webspace/httpdocs/parceldirect.ie/lib/Cake/Routing/Dispatcher.php(183): Controller->startupProcess()
#12 /usr/local/pem/vhosts/262731/webspace/httpdocs/parceldirect.ie/lib/Cake/Routing/Dispatcher.php(161): Dispatcher->_invoke(Object(IndexController), Object(CakeRequest), Object(CakeResponse))
#13 /usr/local/pem/vhosts/262731/webspace/httpdocs/parceldirect.ie/app/webroot/index.php(92): Dispatcher->dispatch(Object(CakeRequest), Object(CakeResponse))
#14 {main}
任何人都可以建议我连接的问题是什么？在订购过程中服务器是否关闭并出现错误？还是其他任何问题？