Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/04xQJqr/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua3497622/w9JlEQp",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-64e54fb6-2166-44c8-ac78-b6a4b7abdbbb",
      "cw-fcfb2871-8a25-4d1f-80d8-27c973b57faf"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-1d22b531-08d6-46b4-a04b-d86d33ef1faf",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/04xQJqr/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-fcfb2871-8a25-4d1f-80d8-27c973b57faf",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}