Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/3ZpPODZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-17fb2d0f-3347-4580-9768-b2fbe367eb1a",
      "cw-328ed343-fd85-472e-86c1-aaed6812a94a"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-1f6ce568-1c3c-407a-acd3-8522b79e161f",
    "manifestId": "https://dam.iuav.it/iuav/containers/3ZpPODZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-328ed343-fd85-472e-86c1-aaed6812a94a"
  }
}