Fatal error: Uncaught Error: Class 'Symfony\Component\Cache\Simple\AbstractCache' not found in /var/www/alldocs/home/sdoehner/webtest/simplesamlphp_idp/vendor/symfony/cache/Simple/FilesystemCache.php:26 Stack trace: #0 {main} thrown in /var/www/alldocs/home/sdoehner/webtest/simplesamlphp_idp/vendor/symfony/cache/Simple/FilesystemCache.php on line 26