Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/wrW1VOn/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua35004502/LeWVEgV",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-812f2891-01e8-4f85-a40c-26891b79820f",
      "cw-52eaaf10-240c-4ad9-bb93-53d6d8ce2935"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-e0d33f9b-00c4-4412-b4b7-04fb84bfdc9e",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wrW1VOn/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-52eaaf10-240c-4ad9-bb93-53d6d8ce2935",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}