Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/wO8ZbDr/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua19035060/wR2Avmx",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-27fa9abd-ab53-44c0-baf5-955434f0599c",
      "cw-f168c809-3030-43b7-b0f8-1cdf5bb500f9"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-44631f94-41ca-4436-a04e-9bfbcfc54927",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wO8ZbDr/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-f168c809-3030-43b7-b0f8-1cdf5bb500f9",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}