Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/wXKGzNV/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua600751/0JKW2Al",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-0b8d459a-3ad0-4506-b031-9de082bd7fa3",
      "cw-e98f3cd5-f3f0-4612-82b4-b66f464add95"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-45b86bae-eeab-43b4-93f1-4ae5ba817bd3",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wXKGzNV/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-e98f3cd5-f3f0-4612-82b4-b66f464add95",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}