Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/5YNaxZg/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua35019436/LpWdG8q",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ab346a3b-e38c-4e17-8e3f-a9439906986b",
      "cw-6e1d8366-faae-438f-84fc-50c8df24149f"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-2c9d7516-45c1-4aed-9cbd-fe93f93d8b40",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/5YNaxZg/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-6e1d8366-faae-438f-84fc-50c8df24149f",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}