Fatal error: Uncaught Error: Class 'Predis\Command\Command' not found in /var/www/app/appregwebservice/vendor/predis/predis/src/Command/Redis/EXISTS.php:20 Stack trace: #0 {main} thrown in /var/www/app/appregwebservice/vendor/predis/predis/src/Command/Redis/EXISTS.php on line 20