Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/Lmy9DDa/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua547781/LeqmZky",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-a9c83960-1300-489f-80c5-a4d78993cb3a",
      "cw-eb9f1510-560b-4e50-b279-bd1bd17a18ae"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-860088dd-b611-49b2-ba03-784cc1604814",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/Lmy9DDa/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-eb9f1510-560b-4e50-b279-bd1bd17a18ae",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}