Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/LaWqoyk/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua35040465/Lzlm7ZQ",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-43cff7c4-bb49-481a-9485-506a6d1aa7c5",
      "cw-4d14eeb6-2180-418f-8cae-18d76a7e3fb8"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-edc46ff4-3037-4835-9ba9-63ae327d6bd5",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/LaWqoyk/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-4d14eeb6-2180-418f-8cae-18d76a7e3fb8",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}