Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/ZjlOg5A/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-84406cb1-4fc9-46d8-b6bd-5132c8dd3a30",
      "cw-fabe1725-eb58-45ef-9aa3-74748b317e8a"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-c0e17485-5113-452b-b43c-d89d4cd1986f",
    "manifestId": "https://dam.iuav.it/iuav/containers/ZjlOg5A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-fabe1725-eb58-45ef-9aa3-74748b317e8a"
  }
}