Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/pZ8rz2A/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-1ad0ff00-21d1-4f49-857f-a1b14ce76abe",
      "cw-7f48c071-aa0b-4031-b6ff-1287fb3b0234"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-ec7b4bd4-277f-429e-a179-3a9f4c7c3c43",
    "manifestId": "https://dam.iuav.it/iuav/containers/pZ8rz2A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-7f48c071-aa0b-4031-b6ff-1287fb3b0234"
  }
}