Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/wrW1VOn/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua35004502/0ZWVBlD",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-cc8bdd75-9f35-49af-95bc-b23d4850043d",
      "cw-14e3123f-96d2-483e-8d47-ba23ab13fdfb"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-20697b72-07d7-428b-ae61-c8881493be78",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wrW1VOn/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-14e3123f-96d2-483e-8d47-ba23ab13fdfb",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}