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_ua35027999/5xAVvrl",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-2d3502c4-d85a-4c40-88c6-39ba74d35d6e",
      "cw-539eb630-61d1-432c-b9e0-37e071fe877d"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-5dddfeb8-c5fc-4b9c-93a6-2a9eac28120e",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wQgyVZY/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-539eb630-61d1-432c-b9e0-37e071fe877d",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}