Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/5vZeAml/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua19678708/LpZreMV",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-9b255280-11ff-444a-b030-c5006d0cdb5a",
      "cw-4dd10d2a-513a-46a9-822b-adaca6807518"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "5vZeAml",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/5vZeAml/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-4dd10d2a-513a-46a9-822b-adaca6807518",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}