Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/5gN84bz/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua600710/wjNExd3",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-9e138afa-ad2f-48ff-b488-be5e1411a597",
      "cw-61640321-eaed-48f9-be10-9a203ee96c96"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-24f08b45-9f7a-4451-862f-4330c9dcb1d5",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/5gN84bz/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-61640321-eaed-48f9-be10-9a203ee96c96",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}