Fatal error: Uncaught Error: Class 'SimpleSAML\Auth\Source' not found in /var/www/html/simplesamlphp/modules/saml/src/Auth/Source/SP.php:28
Stack trace:
#0 {main}
  thrown in /var/www/html/simplesamlphp/modules/saml/src/Auth/Source/SP.php on line 28