we are facing " No data recieved error in our site "
here they gave solution as :
1)disable compilation : php -f shel/compiler.php -- disable
2)set the configcacheoptions to 0 all columns
I want to know what is mean by
set the configcacheoptions to 0 all columns
system.log :
XML declaration allowed only at the start of the document in /var/www/html/site/lib/Varien/Simplexml/Config.php on line 510
exception.log :
exception 'Mage_Core_Exception' with message 'Invalid block type: ' in /var/www/html/site/app/Mage.php:595
Stack trace:
#0 /var/www/html/site/app/code/core/Mage/Core/Model/Layout.php(495): Mage::throwException('Invalid block t...')
#1 /var/www/html/site/app/code/core/Mage/Core/Model/Layout.php(437): Mage_Core_Model_Layout->_getBlockInstance('', Array)
#2 /var/www/html/site/app/code/core/Mage/Core/Model/Layout.php(472): Mage_Core_Model_Layout->createBlock('', '')
#3 /var/www/html/site/app/code/core/Mage/Core/Model/Layout.php(239): Mage_Core_Model_Layout->addBlock('', '')
#4 /var/www/html/site/app/code/core/Mage/Core/Model/Layout.php(205): Mage_Core_Model_Layout->_generateBlock(Object(Mage_Core_Model_Layout_Element), Object(Mage_Core_Model_Layout_Element))
#5 /var/www/html/site/app/code/core/Mage/Core/Model/Layout.php(210): Mage_Core_Model_Layout->generateBlocks(Object(Mage_Core_Model_Layout_Element))
#6 /var/www/html/site/app/code/core/Mage/Core/Controller/Varien/Action.php(344): Mage_Core_Model_Layout->generateBlocks()
#7 /var/www/html/site/app/code/core/Mage/Core/Controller/Varien/Action.php(269): Mage_Core_Controller_Varien_Action->generateLayoutBlocks()
#8 /var/www/html/site/app/code/core/Mage/CatalogSearch/controllers/ResultController.php(77): Mage_Core_Controller_Varien_Action->loadLayout()
#9 /var/www/html/site/app/code/core/Mage/Core/Controller/Varien/Action.php(418): Mage_CatalogSearch_ResultController->indexAction()
#10 /var/www/html/site/app/code/local/Mage/Core/Controller/Varien/Router/Standard.php(250): Mage_Core_Controller_Varien_Action->dispatch('index')
#11 /var/www/html/site/app/code/core/Mage/Core/Controller/Varien/Front.php(172): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#12 /var/www/html/site/app/code/core/Mage/Core/Model/App.php(354): Mage_Core_Controller_Varien_Front->dispatch()
#13 /var/www/html/site/app/Mage.php(684): Mage_Core_Model_App->run(Array)
#14 /var/www/html/site/index.php(89): Mage::run('', 'store')
#15 {main}