Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/LoQdx3X/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua600574/5xJ7k1n",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-260cba4f-f519-4dd6-8cd0-ef56e16dcdfb",
      "cw-54663bbe-aea8-4c68-87a7-2f0f5d860f1f"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-4d135580-32ce-4181-8cf1-89fc6fff16ab",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/LoQdx3X/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-54663bbe-aea8-4c68-87a7-2f0f5d860f1f",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}