Fatal error: Uncaught Error: Class 'SimpleSAML\Metadata\MetaDataStorageSource' not found in /var/www/html/simplesamlphp/src/SimpleSAML/Metadata/MetaDataStorageHandlerFlatFile.php:22
Stack trace:
#0 {main}
  thrown in /var/www/html/simplesamlphp/src/SimpleSAML/Metadata/MetaDataStorageHandlerFlatFile.php on line 22