Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/5KOJPOd/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua550957/wlkVlgR",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-770d7ad7-a341-4b37-a735-b40ca3d74050",
      "cw-b76caf05-0ab8-419c-a20e-e4d5467515f1"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-f5b20256-6881-455a-9880-ffa709cc6ae5",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/5KOJPOd/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-b76caf05-0ab8-419c-a20e-e4d5467515f1",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}