Fatal error: Uncaught Error: Interface 'SAML2\Utilities\Collection' not found in /var/www/alldocs/home/cmckay/cms_static/simplesamlphp_sp/vendor/simplesamlphp/saml2/src/SAML2/Utilities/ArrayCollection.php:15 Stack trace: #0 {main} thrown in /var/www/alldocs/home/cmckay/cms_static/simplesamlphp_sp/vendor/simplesamlphp/saml2/src/SAML2/Utilities/ArrayCollection.php on line 15