Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/wlOJY8D/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua17708802/LqekPKM",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-052aab27-c717-4770-8114-3603078fa5a4",
      "cw-36b7f7a8-13b3-4604-9e0c-af7f230c3441"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "wlOJY8D",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wlOJY8D/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-36b7f7a8-13b3-4604-9e0c-af7f230c3441",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}