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/LoAkbbX",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-56a503b9-aa4c-40db-9d1c-bcf19d83dff8",
      "cw-28273b5c-0761-49cb-94f9-22cdbbb44dd6"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-c649d324-4c02-4e9d-bd9d-68a9dc7f2be1",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/LD8qWBq/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-28273b5c-0761-49cb-94f9-22cdbbb44dd6",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}