Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/wE9oBed/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua35004567/LPxkB9Y",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-9287a5b0-28a5-4a06-8373-1f9b491c010d",
      "cw-07a63d65-a6cd-4e1c-84cf-885c3a84c1f9"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-2aec7390-fa3e-440f-93c4-5c4b77df3ae4",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wE9oBed/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-07a63d65-a6cd-4e1c-84cf-885c3a84c1f9",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}