Magento error:-
Fatal error: spl_autoload() [<a href=’function.spl-autoload’>function.spl-autoload</a>]: Class Zend_Log could not be loaded in /magento/app/code/core/Mage/Core/functions.php on line 247
Solution: this error comes most of the times due to lack of disk sapce or disk quota. so you need to update the disk quota for the user. Contact hosting provider for to increase the space