Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vaXRw2Z/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-4f237689-5568-4bd3-bb31-a2ce0f9cd29f",
      "cw-b6d9167b-e2ac-4443-bb81-fb890b37f641"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-d8c05065-4252-4d66-ab56-8c195f73ef7a",
    "manifestId": "https://dam.iuav.it/iuav/containers/vaXRw2Z/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-b6d9167b-e2ac-4443-bb81-fb890b37f641"
  }
}