Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/w6Nn2ky/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-16657560-06ac-48dc-8840-d7d77183a1fb",
      "cw-ac072885-d5ec-4e5d-9be4-643da9ecef8f"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "w6Nn2ky",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/w6Nn2ky/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-ac072885-d5ec-4e5d-9be4-643da9ecef8f",
    "imageToolsEnabled": true,
    "imageToolsOpen": true
  }
}