Fatal error: Uncaught Error: Class "Symfony\Component\Cache\Adapter\AbstractAdapter" not found in /home/rcmch/test.m-s-i.ch/vendor/symfony/cache/Adapter/PdoAdapter.php:19 Stack trace: #0 {main} thrown in /home/rcmch/test.m-s-i.ch/vendor/symfony/cache/Adapter/PdoAdapter.php on line 19