Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/wrO386y/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua18236034/LDeGyoE",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-a45f09fd-4f35-44b2-a868-914f17f7f192",
      "cw-60f818d3-52f0-45a9-81d7-bf31e820d989"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-5c42c881-b56c-4cda-996d-8e871d30f141",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wrO386y/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-60f818d3-52f0-45a9-81d7-bf31e820d989",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}