Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/wWOqDDd/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua35030444/0AkVgEg",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-a0320284-53e2-447b-becb-2474cfc845c7",
      "cw-50239d96-96c9-482d-beb9-07a9882e6f7e"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-4d3ff677-295c-4662-9799-f7a30999f697",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wWOqDDd/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-50239d96-96c9-482d-beb9-07a9882e6f7e",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}