Fatal error: Uncaught exception 'Zend_Db_Adapter_Exception' with message 'pdo_mysql extension is not installed' in /var/www/html/shop_demo/lib/Varien/Db/Adapter/Pdo/Mysql.php:372 Stack trace: #0 /var/www/html/shop_demo/lib/Zend/Db/Adapter/Abstract.php(460): Varien_Db_Adapter_Pdo_Mysql->_connect() #1 /var/www/html/shop_demo/lib/Zend/Db/Adapter/Pdo/Abstract.php(238): Zend_Db_Adapter_Abstract->query('SET NAMES utf8', Array) #2 /var/www/html/shop_demo/lib/Varien/Db/Adapter/Pdo/Mysql.php(504): Zend_Db_Adapter_Pdo_Abstract->query('SET NAMES utf8', Array) #3 /var/www/html/shop_demo/app/code/core/Mage/Core/Model/Resource.php(179): Varien_Db_Adapter_Pdo_Mysql->query('SET NAMES utf8') #4 /var/www/html/shop_demo/app/code/core/Mage/Core/Model/Resource.php(110): Mage_Core_Model_Resource->_newConnection('pdo_mysql', Object(Mage_Core_Model_Config_Element)) #5 /var/www/html/shop_demo/app/code/core/Mage/Core/Model/Resource/Db/Abstract.php(320): Mage_Core_Model_Resource->getConnection('core_write') #6 /var/www/html/shop_demo/app/code/core/ in /var/www/html/shop_demo/lib/Varien/Db/Adapter/Pdo/Mysql.php on line 372