Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/5gvz4pz/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-97afbd89-76a1-486a-9887-0d02b3b9ff4c",
      "cw-311e9e28-7a0f-45a5-8564-1035a27d0f73"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "5gvz4pz",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/5gvz4pz/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-311e9e28-7a0f-45a5-8564-1035a27d0f73",
    "imageToolsEnabled": true,
    "imageToolsOpen": true
  }
}