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/LeWBpoy",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-4748ed70-6b9a-48c5-98c9-c8debd5e1ac4",
      "cw-42faf6d8-82ec-40e5-8cbd-86d9ed794491"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-73a2598f-f910-40aa-8426-d4ab61fe51c7",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/LPxgMoB/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-42faf6d8-82ec-40e5-8cbd-86d9ed794491",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}