Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/wbWOj9A/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua35046179/04X3zm9",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-a71ae0cb-6fd9-4207-a423-a36d640ed4e1",
      "cw-98b2962a-43fd-4c81-b82c-e2cdfd572c5f"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-91783163-2a40-48b6-a1e8-626344b6e773",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wbWOj9A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-98b2962a-43fd-4c81-b82c-e2cdfd572c5f",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}