Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vaX35RZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-9d04e962-3bc4-4999-b360-f388c455b876",
      "cw-bb0dc981-6047-4a6d-b378-58f08dbbea9c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-8bf11bac-a330-4ad4-a8a8-64303072b455",
    "manifestId": "https://dam.iuav.it/iuav/containers/vaX35RZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-bb0dc981-6047-4a6d-b378-58f08dbbea9c"
  }
}