Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/LD8qWBq/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua547754/0AW2ddW",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-fd349ba9-6c65-4e2b-b18c-8bae97b8b179",
      "cw-8c90c7fa-3f27-4471-816c-be0830ba5611"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-9375c18d-39de-4ae7-b103-01eca437000f",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/LD8qWBq/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-8c90c7fa-3f27-4471-816c-be0830ba5611",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}