SQLSTATE[HY000]: General error: 2006 MySQL server has gone away, query was: SELECT `main_table`.* FROM `tax_class` AS `main_table` WHERE (`class_type` = 'PRODUCT')

#0 /var/www/magento/lib/Varien/Db/Statement/Pdo/Mysql.php(104): Zend_Db_Statement_Pdo->_execute(Array)
#1 /var/www/magento/vendor/shardj/zf1-future/library/Zend/Db/Statement.php(303): Varien_Db_Statement_Pdo_Mysql->_execute(Array)
#2 /var/www/magento/vendor/shardj/zf1-future/library/Zend/Db/Adapter/Abstract.php(480): Zend_Db_Statement->execute(Array)
#3 /var/www/magento/vendor/shardj/zf1-future/library/Zend/Db/Adapter/Pdo/Abstract.php(244): Zend_Db_Adapter_Abstract->query('SELECT `main_ta...', Array)
#4 /var/www/magento/lib/Varien/Db/Adapter/Pdo/Mysql.php(492): Zend_Db_Adapter_Pdo_Abstract->query('SELECT `main_ta...', Array)
#5 /var/www/magento/vendor/shardj/zf1-future/library/Zend/Db/Adapter/Abstract.php(739): Varien_Db_Adapter_Pdo_Mysql->query('SELECT `main_ta...', Array)
#6 /var/www/magento/lib/Varien/Data/Collection/Db.php(758): Zend_Db_Adapter_Abstract->fetchAll('SELECT `main_ta...', Array)
#7 /var/www/magento/app/code/core/Mage/Core/Model/Resource/Db/Collection/Abstract.php(514): Varien_Data_Collection_Db->_fetchAll('SELECT `main_ta...')
#8 /var/www/magento/lib/Varien/Data/Collection/Db.php(580): Mage_Core_Model_Resource_Db_Collection_Abstract->getData()
#9 /var/www/magento/app/code/core/Mage/Tax/Model/Calculation.php(551): Varien_Data_Collection_Db->load()
#10 /var/www/magento/app/code/core/Mage/Tax/Model/Calculation.php(569): Mage_Tax_Model_Calculation->_getRates(Object(Varien_Object), 'product_class_i...', 'PRODUCT')
#11 /var/www/magento/app/code/core/Mage/Tax/Helper/Data.php(830): Mage_Tax_Model_Calculation->getRatesForAllProductTaxClasses(Object(Varien_Object))
#12 /var/www/magento/app/code/core/Mage/Tax/Model/Observer.php(172): Mage_Tax_Helper_Data->getPriceTaxSql('price_index.min...', 'price_index.tax...')
#13 /var/www/magento/app/code/core/Mage/Core/Model/App.php(1405): Mage_Tax_Model_Observer->prepareCatalogIndexPriceSelect(Object(Varien_Event_Observer))
#14 /var/www/magento/app/code/core/Mage/Core/Model/App.php(1383): Mage_Core_Model_App->_callObserverMethod(Object(Mage_Tax_Model_Observer), 'prepareCatalogI...', Object(Varien_Event_Observer), 'tax')
#15 /var/www/magento/app/Mage.php(514): Mage_Core_Model_App->dispatchEvent('catalog_prepare...', Array)
#16 /var/www/magento/app/code/core/Mage/Catalog/Model/Resource/Product/Collection.php(261): Mage::dispatchEvent('catalog_prepare...', Array)
#17 /var/www/magento/app/code/core/Mage/Catalog/Model/Resource/Product/Collection.php(280): Mage_Catalog_Model_Resource_Product_Collection->_preparePriceExpressionParameters(Object(Varien_Db_Select))
#18 /var/www/magento/app/code/core/Mage/Catalog/Model/Resource/Product/Collection.php(908): Mage_Catalog_Model_Resource_Product_Collection->getPriceExpression(Object(Varien_Db_Select))
#19 /var/www/magento/app/code/core/Mage/Catalog/Model/Resource/Product/Collection.php(2101): Mage_Catalog_Model_Resource_Product_Collection->_prepareStatisticsData()
#20 /var/www/magento/app/code/core/Mage/Catalog/Model/Layer/Filter/Price.php(133): Mage_Catalog_Model_Resource_Product_Collection->getMaxPrice()
#21 /var/www/magento/app/code/core/Mage/Catalog/Model/Layer/Filter/Price.php(103): Mage_Catalog_Model_Layer_Filter_Price->getMaxPriceInt()
#22 /var/www/magento/app/code/core/Mage/Catalog/Model/Layer/Filter/Price.php(308): Mage_Catalog_Model_Layer_Filter_Price->getPriceRange()
#23 /var/www/magento/app/code/local/Amasty/Shopby/Model/Catalog/Layer/Filter/Price/Price17ce.php(129): Mage_Catalog_Model_Layer_Filter_Price->_getItemsData()
#24 /var/www/magento/app/code/core/Mage/Catalog/Model/Layer/Filter/Abstract.php(148): Amasty_Shopby_Model_Catalog_Layer_Filter_Price_Price17ce->_getItemsData()
#25 /var/www/magento/app/code/core/Mage/Catalog/Model/Layer/Filter/Abstract.php(117): Mage_Catalog_Model_Layer_Filter_Abstract->_initItems()
#26 /var/www/magento/app/code/core/Mage/Catalog/Model/Layer/Filter/Abstract.php(106): Mage_Catalog_Model_Layer_Filter_Abstract->getItems()
#27 /var/www/magento/app/code/local/Amasty/Shopby/Model/Catalog/Layer/Filter/Price.php(59): Mage_Catalog_Model_Layer_Filter_Abstract->getItemsCount()
#28 /var/www/magento/app/code/core/Mage/Catalog/Block/Layer/Filter/Abstract.php(129): Amasty_Shopby_Model_Catalog_Layer_Filter_Price->getItemsCount()
#29 /var/www/magento/app/code/local/Amasty/Shopby/Block/Catalog/Layer/View.php(201): Mage_Catalog_Block_Layer_Filter_Abstract->getItemsCount()
#30 /var/www/magento/app/code/local/Amasty/Shopby/Block/Catalog/Layer/View.php(68): Amasty_Shopby_Block_Catalog_Layer_View->computeAttributeOptionsData(Array)
#31 /var/www/magento/app/code/core/Mage/Catalog/Block/Layer/View.php(214): Amasty_Shopby_Block_Catalog_Layer_View->getFilters()
#32 /var/www/magento/app/code/local/Amasty/Shopby/Block/Catalog/Layer/View.php(318): Mage_Catalog_Block_Layer_View->canShowOptions()
#33 /var/www/magento/app/design/frontend/cykelkraftv2/cykelkraft/template/amasty/amshopby/view_top.phtml(1): Amasty_Shopby_Block_Catalog_Layer_View->canShowBlock()
#34 /var/www/magento/app/code/core/Mage/Core/Block/Template.php(257): include('/var/www/magent...')
#35 /var/www/magento/app/code/core/Mage/Core/Block/Template.php(294): Mage_Core_Block_Template->fetchView('frontend/cykelk...')
#36 /var/www/magento/app/code/core/Mage/Core/Block/Template.php(307): Mage_Core_Block_Template->renderView()
#37 /var/www/magento/app/code/core/Mage/Core/Block/Abstract.php(933): Mage_Core_Block_Template->_toHtml()
#38 /var/www/magento/app/code/core/Mage/Core/Block/Abstract.php(650): Mage_Core_Block_Abstract->toHtml()
#39 /var/www/magento/app/code/core/Mage/Core/Block/Abstract.php(594): Mage_Core_Block_Abstract->_getChildHtml('amshopby.navtop', true)
#40 /var/www/magento/app/design/frontend/cykelkraftv2/default/template/catalog/category/view.phtml(31): Mage_Core_Block_Abstract->getChildHtml('amshopby.navtop')
#41 /var/www/magento/app/code/core/Mage/Core/Block/Template.php(257): include('/var/www/magent...')
#42 /var/www/magento/app/code/core/Mage/Core/Block/Template.php(294): Mage_Core_Block_Template->fetchView('frontend/cykelk...')
#43 /var/www/magento/app/code/core/Mage/Core/Block/Template.php(307): Mage_Core_Block_Template->renderView()
#44 /var/www/magento/app/code/core/Mage/Core/Block/Abstract.php(933): Mage_Core_Block_Template->_toHtml()
#45 /var/www/magento/app/code/core/Mage/Core/Block/Text/List.php(42): Mage_Core_Block_Abstract->toHtml()
#46 /var/www/magento/app/code/core/Mage/Core/Block/Abstract.php(933): Mage_Core_Block_Text_List->_toHtml()
#47 /var/www/magento/app/code/core/Mage/Core/Block/Abstract.php(650): Mage_Core_Block_Abstract->toHtml()
#48 /var/www/magento/app/code/core/Mage/Core/Block/Abstract.php(594): Mage_Core_Block_Abstract->_getChildHtml('content', true)
#49 /var/www/magento/app/design/frontend/cykelkraftv2/default/template/page/product-nosidebar.phtml(15): Mage_Core_Block_Abstract->getChildHtml('content')
#50 /var/www/magento/app/code/core/Mage/Core/Block/Template.php(257): include('/var/www/magent...')
#51 /var/www/magento/app/code/core/Mage/Core/Block/Template.php(294): Mage_Core_Block_Template->fetchView('frontend/cykelk...')
#52 /var/www/magento/app/code/core/Mage/Core/Block/Template.php(307): Mage_Core_Block_Template->renderView()
#53 /var/www/magento/app/code/core/Mage/Core/Block/Abstract.php(933): Mage_Core_Block_Template->_toHtml()
#54 /var/www/magento/app/code/core/Mage/Core/Model/Layout.php(580): Mage_Core_Block_Abstract->toHtml()
#55 /var/www/magento/app/code/core/Mage/Core/Controller/Varien/Action.php(397): Mage_Core_Model_Layout->getOutput()
#56 /var/www/magento/app/code/core/Mage/Catalog/controllers/CategoryController.php(173): Mage_Core_Controller_Varien_Action->renderLayout()
#57 /var/www/magento/app/code/core/Mage/Core/Controller/Varien/Action.php(428): Mage_Catalog_CategoryController->viewAction()
#58 /var/www/magento/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(262): Mage_Core_Controller_Varien_Action->dispatch('view')
#59 /var/www/magento/app/code/core/Mage/Core/Controller/Varien/Front.php(188): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#60 /var/www/magento/app/code/core/Mage/Core/Model/App.php(371): Mage_Core_Controller_Varien_Front->dispatch()
#61 /var/www/magento/app/Mage.php(748): Mage_Core_Model_App->run(Array)
#62 /var/www/magento/index.php(43): Mage::run('base', 'website')
#63 {main}