Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Jv6gw7A/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-c7e70ff0-2223-4ba5-8f9e-e38cf098883a",
      "cw-279d6e1f-726a-4a1c-b8f1-5d66354c1873"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-feaffe79-ebb5-4234-b0e0-58b5b02ffdb3",
    "manifestId": "https://dam.iuav.it/iuav/containers/Jv6gw7A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-279d6e1f-726a-4a1c-b8f1-5d66354c1873"
  }
}