我将网站从1.6升级到1.8，在此过程中将其移至新服务器。一切正常，但我在尝试访问目录时出现以下错误＆gt;管理中的“管理产品”部分。可以做些什么？
a:5:{i:0;s:672:"SELECT `e`.*, `at_qty`.`qty`, `at_status`.`value` AS `status`, `at_visibility`.`value` AS `visibility` FROM `catalog_product_entity` AS `e`
LEFT JOIN `cataloginventory_stock_item` AS `at_qty` ON (at_qty.`product_id`=e.entity_id) AND (at_qty.stock_id=1)
INNER JOIN `catalog_product_entity_int` AS `at_status` ON (`at_status`.`entity_id` = `e`.`entity_id`) AND (`at_status`.`attribute_id` = '89') AND (`at_status`.`store_$
INNER JOIN `catalog_product_entity_int` AS `at_visibility` ON (`at_visibility`.`entity_id` = `e`.`entity_id`) AND (`at_visibility`.`attribute_id` = '95') AND (`at_vis$
";i:1;s:5307:"#0 /var/www/lib/Varien/Db/Statement/Pdo/Mysql.php(110): Zend_Db_Statement_Pdo->_execute(Array)
#1 /var/www/app/code/core/Zend/Db/Statement.php(291): Varien_Db_Statement_Pdo_Mysql->_execute(Array)
#2 /var/www/lib/Zend/Db/Adapter/Abstract.php(479): Zend_Db_Statement->execute(Array)
#3 /var/www/lib/Zend/Db/Adapter/Pdo/Abstract.php(238): Zend_Db_Adapter_Abstract->query('SELECT `e`.*, `...', Array)
#4 /var/www/lib/Varien/Db/Adapter/Pdo/Mysql.php(428): Zend_Db_Adapter_Pdo_Abstract->query('SELECT `e`.*, `...', Array)
#5 /var/www/lib/Zend/Db/Adapter/Abstract.php(734): Varien_Db_Adapter_Pdo_Mysql->query('SELECT `e`.*, `...', Array)
#6 /var/www/app/code/local/Varien/Data/Collection/Db.php(688): Zend_Db_Adapter_Abstract->fetchAll('SELECT `e`.*, `...', Array)
#7 /var/www/app/code/core/Mage/Eav/Model/Entity/Collection/Abstract.php(1047): Varien_Data_Collection_Db->_fetchAll('SELECT `e`.*, `...')
#8 /var/www/app/code/core/Mage/Eav/Model/Entity/Collection/Abstract.php(871): Mage_Eav_Model_Entity_Collection_Abstract->_loadEntities(false, false)
#9 /var/www/app/code/core/Mage/Adminhtml/Block/Widget/Grid.php(533): Mage_Eav_Model_Entity_Collection_Abstract->load()
#10 /var/www/app/code/core/Mage/Adminhtml/Block/Catalog/Product/Grid.php(125): Mage_Adminhtml_Block_Widget_Grid->_prepareCollection()
#11 /var/www/app/code/core/Mage/Adminhtml/Block/Widget/Grid.php(626): Mage_Adminhtml_Block_Catalog_Product_Grid->_prepareCollection()
#12 /var/www/app/code/core/Mage/Adminhtml/Block/Widget/Grid.php(632): Mage_Adminhtml_Block_Widget_Grid->_prepareGrid()
#13 /var/www/var/ait_rewrite/6bfe16ca572eea47db567910902c6209.php(887): Mage_Adminhtml_Block_Widget_Grid->_beforeToHtml()
#14 /var/www/var/ait_rewrite/6bfe16ca572eea47db567910902c6209.php(607): Aitoc_Aitsys_Model_Rewriter_Mage_Core_Block_Abstract->toHtml()
#15 /var/www/var/ait_rewrite/6bfe16ca572eea47db567910902c6209.php(551): Aitoc_Aitsys_Model_Rewriter_Mage_Core_Block_Abstract->_getChildHtml('grid', true)
#16 /var/www/app/code/core/Mage/Adminhtml/Block/Catalog/Product.php(79): Aitoc_Aitsys_Model_Rewriter_Mage_Core_Block_Abstract->getChildHtml('grid')
#17 /var/www/app/design/adminhtml/default/default/template/catalog/product.phtml(46): Mage_Adminhtml_Block_Catalog_Product->getGridHtml()
#18 /var/www/var/ait_rewrite/67b58abff9e6bd7b400bb2fc1903bf2f.php(412): include('/var/www/app/de...')
#19 /var/www/var/ait_rewrite/67b58abff9e6bd7b400bb2fc1903bf2f.php(274): Mage_Core_Block_Template->fetchView('adminhtml/defau...')
#20 /var/www/var/ait_rewrite/67b58abff9e6bd7b400bb2fc1903bf2f.php(288): Aitoc_Aitsys_Model_Rewriter_Mage_Core_Block_Template->renderView()
#21 /var/www/app/code/core/Mage/Adminhtml/Block/Template.php(81): Aitoc_Aitsys_Model_Rewriter_Mage_Core_Block_Template->_toHtml()
#22 /var/www/app/code/core/Mage/Adminhtml/Block/Widget/Container.php(308): Mage_Adminhtml_Block_Template->_toHtml()
#23 /var/www/var/ait_rewrite/6bfe16ca572eea47db567910902c6209.php(888): Mage_Adminhtml_Block_Widget_Container->_toHtml()
#24 /var/www/app/code/core/Mage/Core/Block/Text/List.php(43): Aitoc_Aitsys_Model_Rewriter_Mage_Core_Block_Abstract->toHtml()
#25 /var/www/var/ait_rewrite/6bfe16ca572eea47db567910902c6209.php(888): Mage_Core_Block_Text_List->_toHtml()
#26 /var/www/var/ait_rewrite/6bfe16ca572eea47db567910902c6209.php(607): Aitoc_Aitsys_Model_Rewriter_Mage_Core_Block_Abstract->toHtml()
#27 /var/www/var/ait_rewrite/6bfe16ca572eea47db567910902c6209.php(551): Aitoc_Aitsys_Model_Rewriter_Mage_Core_Block_Abstract->_getChildHtml('content', true)
#28 /var/www/app/design/adminhtml/default/default/template/page.phtml(74): Aitoc_Aitsys_Model_Rewriter_Mage_Core_Block_Abstract->getChildHtml('content')
#29 /var/www/var/ait_rewrite/67b58abff9e6bd7b400bb2fc1903bf2f.php(412): include('/var/www/app/de...')
#30 /var/www/var/ait_rewrite/67b58abff9e6bd7b400bb2fc1903bf2f.php(274): Mage_Core_Block_Template->fetchView('adminhtml/defau...')
#31 /var/www/var/ait_rewrite/67b58abff9e6bd7b400bb2fc1903bf2f.php(288): Aitoc_Aitsys_Model_Rewriter_Mage_Core_Block_Template->renderView()
#32 /var/www/app/code/core/Mage/Adminhtml/Block/Template.php(81): Aitoc_Aitsys_Model_Rewriter_Mage_Core_Block_Template->_toHtml()