Fatal error: Uncaught Error: Interface 'SAML2\Exception\Throwable' not found in /var/www/alldocs/home/sdoehner/webtest/simplesamlphp_idp/vendor/simplesamlphp/saml2/src/SAML2/Signature/MissingConfigurationException.php:9 Stack trace: #0 {main} thrown in /var/www/alldocs/home/sdoehner/webtest/simplesamlphp_idp/vendor/simplesamlphp/saml2/src/SAML2/Signature/MissingConfigurationException.php on line 9