Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/5Bxr2eE/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-57311cc2-561e-40d8-ba00-2b9c8a582555",
      "cw-d967b375-c79b-46d2-bb57-f4724cb954bb"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "5Bxr2eE",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/5Bxr2eE/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d967b375-c79b-46d2-bb57-f4724cb954bb",
    "imageToolsEnabled": true,
    "imageToolsOpen": true
  }
}