Fatal error: Uncaught Error: Call to undefined method Mage_Log_Helper_Data::isLogFileExtensionValid() in /var/www/vhosts/dedoshop.com/httpdocs/app/Mage.php:814 Stack trace: #0 /var/www/vhosts/dedoshop.com/httpdocs/app/code/core/Mage/Core/functions.php(234): Mage::log('Warning: preg_m...', 3) #1 [internal function]: mageCoreErrorHandler(2, 'preg_match(): C...', '/var/www/vhosts...', 1220, Array) #2 /var/www/vhosts/dedoshop.com/httpdocs/app/code/local/Amasty/Fpc/Model/Fpc/Front.php(1220): preg_match('|?amp=1|', '/sendfriend/pro...') #3 /var/www/vhosts/dedoshop.com/httpdocs/app/code/local/Amasty/Fpc/Model/Fpc/Front.php(584): Amasty_Fpc_Model_Fpc_Front->inIgnoreList() #4 /var/www/vhosts/dedoshop.com/httpdocs/app/code/local/Amasty/Fpc/Model/Fpc/Front.php(1355): Amasty_Fpc_Model_Fpc_Front->ignore() #5 /var/www/vhosts/dedoshop.com/httpdocs/app/code/core/Mage/Core/Model/Cache.php(687): Amasty_Fpc_Model_Fpc_Front->extractContent(false) #6 /var/www/vhosts/dedoshop.com/httpdocs/app/code/core/Mage/Core/Model/App.php(340): Mage_Core_M in /var/www/vhosts/dedoshop.com/httpdocs/app/Mage.php on line 814