Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/wkGxgJp/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua600939/03KJMAd",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-f12a8491-104e-4ceb-8c1a-6ca900e5c03f",
      "cw-ba7ad835-5f90-496d-a733-54b770b95964"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-6496e939-e1e1-4241-af9c-2a7fff22c6e6",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wkGxgJp/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-ba7ad835-5f90-496d-a733-54b770b95964",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}