Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vxB1wQe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-df98df31-c8cb-466a-89aa-4a7343e754d6",
      "cw-a5365ce7-805d-41f2-a26d-c15bdd3eb2ee"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-d1d8c4ea-25e3-4347-8916-dee70e264b08",
    "manifestId": "https://dam.iuav.it/iuav/containers/vxB1wQe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-a5365ce7-805d-41f2-a26d-c15bdd3eb2ee"
  }
}