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/wRq8N6Y",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-813f6aa5-0b97-43e5-aea5-3b0a61ad9a6e",
      "cw-77f06249-90ea-4a46-a560-4b86ba4a4c1c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-e0a2f38e-3c9a-45ff-8903-ed853378b45e",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/LNXo1ry/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-77f06249-90ea-4a46-a560-4b86ba4a4c1c",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}