Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/wbRP9P8/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua19034549/57aRE2O",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-f6aa0604-63dd-494a-9267-c5a99f9f95d6",
      "cw-af408d04-5be3-4094-9abc-8287db3801d4"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-e1b1a7c6-2174-464d-96da-519bb1cca6ee",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wbRP9P8/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-af408d04-5be3-4094-9abc-8287db3801d4",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}