Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/wE9zZWW/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua34989955/LDAVPRB",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d48c7995-6ce9-4ffc-96df-23b27070e895",
      "cw-29922673-7a8b-4434-b840-d775eff61ef5"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-4b423a2a-cced-4253-857e-253f32f41f3b",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wE9zZWW/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-29922673-7a8b-4434-b840-d775eff61ef5",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}