message: Fix crash trying to index empty tags list
diff: @@ -83,6 +83,7 @@ export class SearchService {
  indexTags(swagger:SwaggerSpec) {
  let tags = swagger.tags;
  + if (!tags) return;
  for (let tag of tags) {
  if (tag['x-traitTag']) continue;
  let id = `tag/${slugify(tag.name)}`;
  