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/wrW1Vqn",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-f777473c-29a5-41d8-8754-e35dc9d12b3e",
      "cw-18c668bd-5f29-46e9-b488-c604f3f4eb89"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-ee9227fa-51e7-4047-8e28-2634c275f2aa",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wE9oBed/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-18c668bd-5f29-46e9-b488-c604f3f4eb89",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}