so when I go to check my alerts this happens:
Mysqli prepare error: Unknown column 'user.user_id' in 'on clause'
Zend_Db_Statement_Mysqli->_prepare() in Zend/Db/Statement.php at line 115
Zend_Db_Statement->__construct() in Zend/Db/Adapter/Mysqli.php at line 381
Zend_Db_Adapter_Mysqli->prepare() in Zend/Db/Adapter/Abstract.php at line 478
Zend_Db_Adapter_Abstract->query() in XenForo/Model.php at line 219
XenForo_Model->fetchAllKeyed() in XenForo/Model/Post.php at line 63
XenForo_Model_Post->getPostsByIds() in XenForo/AlertHandler/DiscussionMessage/Post.php at line 26
XenForo_AlertHandler_DiscussionMessage_Post->getContentByIds() in XenForo/Model/Alert.php at line 234
XenForo_Model_Alert->_getContentForAlerts() in XenForo/Model/Alert.php at line 77
XenForo_Model_Alert->getAlertsForUser() in XenForo/ControllerPublic/Account.php at line 75
XenForo_ControllerPublic_Account->actionAlertsPopup() in XenForo/FrontController.php at line 347
XenForo_FrontController->dispatch() in XenForo/FrontController.php at line 134
XenForo_FrontController->run() in /home/xeno/public_html/xenforo/index.php at line 13
pls help