Fatal error: Uncaught Error: Interface 'Symfony\Contracts\Cache\ItemInterface' not found in /var/www/alldocs/home/rprather/webdev/cms_static/simplesamlphp_sp/vendor/symfony/cache/CacheItem.php:22 Stack trace: #0 {main} thrown in /var/www/alldocs/home/rprather/webdev/cms_static/simplesamlphp_sp/vendor/symfony/cache/CacheItem.php on line 22