Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/LNXo1ry/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua34998352/LDA6YaG",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-e942a2fc-b40d-4b94-98c4-d2d6ecc08c01",
      "cw-e21109f8-77e0-4963-8212-0fc75c456479"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-9d80ca38-42ae-4201-8aed-6f355dddac15",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/LNXo1ry/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-e21109f8-77e0-4963-8212-0fc75c456479",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}