lib/private/Streamer.php:176:13: InvalidNullableReturnType: The declared return type 'bool' for OC\Streamer::addEmptyDir is not nullable, but 'bool|null' contains null (see https://psalm.dev/144)

lib/private/Streamer.php:179:10: NullableReturnStatement: The declared return type 'bool' for OC\Streamer::addEmptyDir is not nullable, but the function returns 'bool|null' (see https://psalm.dev/139)