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_ua600574/04elgYY",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-79b2a4ff-1c0a-477c-8b14-26c3d0cbf652",
      "cw-69bf3f88-ccfb-46bf-8d9a-02101a1f1e31"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-e5101fc8-4b64-4bba-8493-7c5890a97577",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/LoQdx3X/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-69bf3f88-ccfb-46bf-8d9a-02101a1f1e31",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}