breaks if x is not a proper UUID

Author: tcnichol

app/api/Files.scala

@@ -526,7 +526,9 @@ class Files @Inject()(
   def uploadToDataset(dataset_id: UUID, showPreviews: String = "DatasetLevel", originalZipFile: String = "", flagsFromPrevious: String = "", extract: Boolean = true, folder_id: Option[String]) = PermissionAction(Permission.AddResourceToDataset, Some(ResourceRef(ResourceRef.dataset, dataset_id)))(parse.multipartFormData) { implicit request =>
     datasets.get(dataset_id) match {
       case Some(dataset) => {
+
         val folder = folder_id.flatMap(x => folders.get(UUID(x)))
+
         val uploadedFiles = FileUtils.uploadFilesMultipart(request, Some(dataset), folder, showPreviews = showPreviews, originalZipFile = originalZipFile, flagsFromPrevious = flagsFromPrevious, runExtractors = extract, apiKey = request.apiKey)
         uploadedFiles.length match {
           case 0 => BadRequest("No files uploaded")