Fatal error: Uncaught Error: Class 'Magento_Db_Adapter_Pdo_Mysql' not found in /var/www/virtual/calvado.com/htdocs/app/code/core/Mage/Core/Model/Resource.php:165
Stack trace:
#0 /var/www/virtual/calvado.com/htdocs/app/code/core/Mage/Core/Model/Resource.php(110): Mage_Core_Model_Resource->_newConnection('pdo_mysql', Array)
#1 /var/www/virtual/calvado.com/htdocs/app/code/core/Mage/Core/Model/Resource/Db/Abstract.php(320): Mage_Core_Model_Resource->getConnection('core_write')
#2 /var/www/virtual/calvado.com/htdocs/app/code/core/Mage/Core/Model/Resource/Db/Abstract.php(350): Mage_Core_Model_Resource_Db_Abstract->_getConnection('write')
#3 /var/www/virtual/calvado.com/htdocs/app/code/core/Mage/Core/Model/Resource/Db/Abstract.php(335): Mage_Core_Model_Resource_Db_Abstract->_getWriteAdapter()
#4 /var/www/virtual/calvado.com/htdocs/app/code/core/Mage/Core/Model/Resource/Db/Abstract.php(360): Mage_Core_Model_Resource_Db_Abstract->_getReadAdapter()
#5 /var/www/virtual/calvado.com/htdocs/app/code/core/Mage/Core/Model/Resource/Db/Col in /var/www/virtual/calvado.com/htdocs/app/code/core/Mage/Core/Model/Resource.php on line 165