Fatal error: Uncaught Error: Interface 'Stringable' not found in /var/www/html/simplesamlphp/vendor/marc-mabe/php-enum/src/Enum.php:20
Stack trace:
#0 {main}
  thrown in /var/www/html/simplesamlphp/vendor/marc-mabe/php-enum/src/Enum.php on line 20