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/LmWjaKa",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-03c2228d-5505-4cc9-8f02-849eb7cb4672",
      "cw-2951ceed-1e77-4386-abed-d65e294deb92"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-d7d84f09-b9a6-4ea3-ad46-a9e9c0195195",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/LNXo1ry/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-2951ceed-1e77-4386-abed-d65e294deb92",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}