Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AwqdaLZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-4e11ad27-109a-47f1-977a-4e4a313da12f",
      "cw-ae029aa6-f11f-410a-9c85-0236087dd945"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-72c38b05-e334-4289-a73d-c1d91e20331d",
    "manifestId": "https://dam.iuav.it/iuav/containers/AwqdaLZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-ae029aa6-f11f-410a-9c85-0236087dd945"
  }
}