Fatal error: Uncaught Error: Interface 'SimpleSAML\Logger\LoggingHandlerInterface' not found in /var/www/alldocs/home/sdoehner/webtest/simplesamlphp_idp/lib/SimpleSAML/Logger/FileLoggingHandler.php:18 Stack trace: #0 {main} thrown in /var/www/alldocs/home/sdoehner/webtest/simplesamlphp_idp/lib/SimpleSAML/Logger/FileLoggingHandler.php on line 18