Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vX5q3yA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d61f1081-c089-4bf9-998c-db0c84c42c8d",
      "cw-8f279905-4532-4a47-9a05-33993c6254e7"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-dfccc2ad-ad33-4347-9cb8-5cc4bb0e6a9a",
    "manifestId": "https://dam.iuav.it/iuav/containers/vX5q3yA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-8f279905-4532-4a47-9a05-33993c6254e7"
  }
}