Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/wE9rxaq/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua35040602/5VVM7ZE",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-082d7d32-9a8a-4455-9951-13f39cde6338",
      "cw-3d071750-6dc6-4bd5-92f4-a0333f472d1e"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-30bff85c-aaa7-406b-9318-8f3bf6ab62cf",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wE9rxaq/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-3d071750-6dc6-4bd5-92f4-a0333f472d1e",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}