Fatal error: Uncaught Error: Class 'Mage_Core_Controller_Request_Http' not found in /home/alessandro/htdocs/app/code/core/Mage/Core/Model/App.php:1219 Stack trace: #0 /home/alessandro/htdocs/app/code/community/Aitoc/Aitsys/Model/Rewriter/Observer.php(26): Mage_Core_Model_App->getRequest() #1 /home/alessandro/htdocs/app/code/core/Mage/Core/Model/App.php(1339): Aitoc_Aitsys_Model_Rewriter_Observer->clearCache(Object(Varien_Event_Observer)) #2 /home/alessandro/htdocs/app/code/core/Mage/Core/Model/App.php(1318): Mage_Core_Model_App->_callObserverMethod(Object(Aitoc_Aitsys_Model_Rewriter_Observer), 'clearCache', Object(Varien_Event_Observer)) #3 /home/alessandro/htdocs/app/Mage.php(450): Mage_Core_Model_App->dispatchEvent('application_cle...', Array) #4 /home/alessandro/htdocs/app/code/core/Mage/Core/Model/App.php(1172): Mage::dispatchEvent('application_cle...', Array) #5 /home/alessandro/htdocs/app/code/core/Mage/Core/Model/Config.php(570): Mage_Core_Model_App->cleanCache(Array) #6 /home/alessandro/htdocs/app/code/core/Mage/C in /home/alessandro/htdocs/app/code/core/Mage/Core/Model/App.php on line 1219