Fatal error: Uncaught Error: Class 'Zend_Cache_Backend' not found in /var/www/sites/www.lasec.com/vendor/colinmollenhour/cache-backend-redis/Cm/Cache/Backend/Redis.php:39 Stack trace: #0 /var/www/sites/www.lasec.com/vendor/composer/ClassLoader.php(571): include() #1 /var/www/sites/www.lasec.com/vendor/composer/ClassLoader.php(428): Composer\Autoload\includeFile() #2 [internal function]: Composer\Autoload\ClassLoader->loadClass() #3 /var/www/sites/www.lasec.com/vendor/magento/framework/Cache/Backend/Redis.php(12): spl_autoload_call() #4 /var/www/sites/www.lasec.com/vendor/composer/ClassLoader.php(571): include('/var/www/sites/...') #5 /var/www/sites/www.lasec.com/vendor/composer/ClassLoader.php(428): Composer\Autoload\includeFile() #6 [internal function]: Composer\Autoload\ClassLoader->loadClass() #7 [internal function]: spl_autoload_call() #8 /var/www/sites/www.lasec.com/vendor/magento/framework/App/Cache/Frontend/Factory.php(299): class_exists() #9 /var/www/sites/www.lasec.com/vendor/magento/framework/App/Cache/Frontend/ in /var/www/sites/www.lasec.com/vendor/colinmollenhour/cache-backend-redis/Cm/Cache/Backend/Redis.php on line 39