Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Jva0QoZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-68376cde-3a21-47c6-bded-a5e4b5e4d427",
      "cw-bfe6e405-da53-4e0b-95c4-5ea02714e126"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-3386bcdd-a523-40bd-ad52-7c43d8c1eb06",
    "manifestId": "https://dam.iuav.it/iuav/containers/Jva0QoZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-bfe6e405-da53-4e0b-95c4-5ea02714e126"
  }
}