Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/027JoM3/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-5f7bb48d-1e5a-4aa6-bb3c-442a3dae1d21",
      "cw-5d8d7b37-d90c-4406-a69b-b77738c77b92"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "027JoM3",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/027JoM3/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-5d8d7b37-d90c-4406-a69b-b77738c77b92",
    "imageToolsEnabled": true,
    "imageToolsOpen": true
  }
}