Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/LPxgMoB/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua35046274/w6xkzoO",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-840f0e39-a684-450b-8b91-30b84dba7c20",
      "cw-bed7532c-7d02-4dbf-bd8c-a15e9db10d12"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-31a9c43d-7242-4a96-8c87-36425a17ae9e",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/LPxgMoB/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-bed7532c-7d02-4dbf-bd8c-a15e9db10d12",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}