Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AkrNBxv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-a4f889e1-964d-4910-923b-f9951bb077c3",
      "cw-9428b232-5096-4baf-8672-71fe9c401b57"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-2a7b453e-0e8e-45e9-8f1d-00198283a516",
    "manifestId": "https://dam.iuav.it/iuav/containers/AkrNBxv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-9428b232-5096-4baf-8672-71fe9c401b57"
  }
}