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/w6XBPJN",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ca9d022a-3426-4b52-8604-99effd4a0b89",
      "cw-54b7906d-c100-412a-a2f4-3f8c1c52ec1b"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-19887513-2695-489d-bf94-53706567bd7b",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/LoQdx3X/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-54b7906d-c100-412a-a2f4-3f8c1c52ec1b",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}