Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/wE4Pdoq/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua549135/La8m2xb",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-9096ca5d-709f-4af8-81bb-3c3c5cf9ad8b",
      "cw-befb2552-67a8-4f91-9dd8-97f4f1af4bb8"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-cfe5fa10-dbab-4d5e-8ef3-9706c0d96d16",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wE4Pdoq/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-befb2552-67a8-4f91-9dd8-97f4f1af4bb8",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}