Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/wQgyVZY/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua35027999/wrWG6QJ",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ad794960-a2c8-42c9-92ec-1d1f4fb8d212",
      "cw-fd0a8191-e71e-4f37-8f00-37b2be418d76"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-b040afd7-587b-466f-8421-52eda0cb023f",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wQgyVZY/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-fd0a8191-e71e-4f37-8f00-37b2be418d76",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}