Fatal error: Uncaught Error: Class 'Symfony\Component\Cache\Psr16Cache' not found in /var/www/alldocs/home/cmckay/cms_static/simplesamlphp_sp/vendor/symfony/cache/Simple/Psr6Cache.php:21 Stack trace: #0 {main} thrown in /var/www/alldocs/home/cmckay/cms_static/simplesamlphp_sp/vendor/symfony/cache/Simple/Psr6Cache.php on line 21