Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/wbWOj9A/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua35046179/04X3zm9",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-8e6bd95e-e3ef-49a7-bb59-b6ab19f3f8e6",
      "cw-4047b6d2-bd3f-478d-be55-ea93d7d3a967"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-d0368d71-8901-4935-952b-be029fb26d8a",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wbWOj9A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-4047b6d2-bd3f-478d-be55-ea93d7d3a967",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}