Fatal error: Uncaught Error: Interface 'Symfony\Contracts\HttpClient\Exception\HttpExceptionInterface' not found in /var/www/alldocs/home/cmckay/cms_static/simplesamlphp_sp/vendor/symfony/http-client-contracts/Exception/ServerExceptionInterface.php:21 Stack trace: #0 {main} thrown in /var/www/alldocs/home/cmckay/cms_static/simplesamlphp_sp/vendor/symfony/http-client-contracts/Exception/ServerExceptionInterface.php on line 21