Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vaXwP2Z/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-953401e7-5f1d-4f09-aba2-3ce718aca6d2",
      "cw-2d49eae6-0934-4ae3-ac5b-32e41599001a"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-9d3b66c0-7319-4fbc-9a0a-8e5ad7e69b87",
    "manifestId": "https://dam.iuav.it/iuav/containers/vaXwP2Z/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-2d49eae6-0934-4ae3-ac5b-32e41599001a"
  }
}