Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/9AJmJxv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-dfea71fe-2577-4905-acfd-526988f00565",
      "cw-522f8100-262d-467e-abce-dcec27e5ee1c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-b15f53c2-6ddb-4b5f-93e9-7bcb16269360",
    "manifestId": "https://dam.iuav.it/iuav/containers/9AJmJxv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-522f8100-262d-467e-abce-dcec27e5ee1c"
  }
}