Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/wQkMMdJ/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua17826933/La4kkrW",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-f065973b-b962-4b16-9bdb-7113f421f4a2",
      "cw-a18e669e-05a9-42de-9fc0-6d6ecba9be6e"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-3eb66f7d-c721-429c-9fc9-71f808677db8",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wQkMMdJ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-a18e669e-05a9-42de-9fc0-6d6ecba9be6e",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}