message: fix: correctly assign url
diff: @@ -12,7 +12,7 @@ export class DownloadTask extends AbortableTask<void> implements StatusControlle
  super();
  options.statusController = this;
  this.download = createDownload(options);
  - this._from = options.url[0];
  + this._from = options.url instanceof Array ? options.url[0] : options.url;
  this._to = options.destination;
  }
  