Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/wO8ZbDr/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua19035060/wR2Avmx",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-39ad69f9-9460-40a8-987f-7a46f5d61c6c",
      "cw-68b7885d-5f90-4c3c-a507-2e69702d39f9"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-39b43233-3baa-40af-b552-bfd3c2d45945",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wO8ZbDr/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-68b7885d-5f90-4c3c-a507-2e69702d39f9",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}