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-967ae542-308b-47bd-a40b-3003c95c9483",
      "cw-04c409d2-7457-4111-ab37-7b89907a4b3f"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-e5c2afe0-219b-4cd7-a861-f284ffda26dc",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wE9oBed/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-04c409d2-7457-4111-ab37-7b89907a4b3f",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}