Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/04QVk1Y/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-262b5d8e-edd7-4cc7-85f1-e35bb45fda34",
      "cw-2eec28d3-113e-4805-b340-053b7b1a6aa9"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "04QVk1Y",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/04QVk1Y/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-2eec28d3-113e-4805-b340-053b7b1a6aa9",
    "imageToolsEnabled": true,
    "imageToolsOpen": true
  }
}