Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vQnblWA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-4f81877b-5775-4158-a24d-cfc445a35a2c",
      "cw-2a1ac6e8-8e32-46f0-a854-026b85626170"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-5b8e483b-b5f4-44d2-b8da-464e10f3c2c7",
    "manifestId": "https://dam.iuav.it/iuav/containers/vQnblWA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-2a1ac6e8-8e32-46f0-a854-026b85626170"
  }
}