Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/5GnNazN/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-9455a5c6-6df6-43e2-94ff-a24a76df051a",
      "cw-99f0e188-86c3-4a43-83e5-6231cb74360d"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "5GnNazN",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/5GnNazN/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-99f0e188-86c3-4a43-83e5-6231cb74360d",
    "imageToolsEnabled": true,
    "imageToolsOpen": true
  }
}