Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vxKdDjZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-7e775f7c-172f-4147-9f1f-f2475f424c70",
      "cw-1f3f0298-a631-4dae-8b03-39a6ccdc0def"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-05975e73-5bcd-4872-a883-d0a9527219b8",
    "manifestId": "https://dam.iuav.it/iuav/containers/vxKdDjZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-1f3f0298-a631-4dae-8b03-39a6ccdc0def"
  }
}