Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/5xZEr9g/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua19802403/wjZDAD7",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-5303c5f5-f1b8-4b1e-93ce-14de4b654ceb",
      "cw-27f0b4f5-edd8-4f4e-b38e-53e9325e5d3d"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "5xZEr9g",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/5xZEr9g/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-27f0b4f5-edd8-4f4e-b38e-53e9325e5d3d",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}