Fatal error: Uncaught Error: Class 'SAML2\Constants' not found in /var/www/html/simplesamlphp/modules/adfs/src/SAML2/XML/fed/Constants.php:13
Stack trace:
#0 {main}
  thrown in /var/www/html/simplesamlphp/modules/adfs/src/SAML2/XML/fed/Constants.php on line 13