Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/w1YznJD/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua35030561/LPxMbo1",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-30370898-4595-4a82-9b06-7e4cb87ad389",
      "cw-f506c44d-b719-4926-88df-ae8cf1289c88"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-9f10347d-911b-4232-ba29-1a1b216728f0",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/w1YznJD/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-f506c44d-b719-4926-88df-ae8cf1289c88",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}