Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/wXKGzNV/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua600751/5xJ7vYE",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-cb2e4f7c-fb51-44d8-8cbc-fe5989b1974f",
      "cw-d05182fe-bc0c-4a4f-85a1-d3a98c4ef84e"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-bb191c26-603a-4262-9ad0-50f71fafcc8f",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wXKGzNV/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d05182fe-bc0c-4a4f-85a1-d3a98c4ef84e",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}