Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/wbWOj9A/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua35046179/5xABGR3",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-03003341-d0db-4fc3-9aa7-701c4d0f8490",
      "cw-7fa5b419-b978-4197-a250-ae7b4142438a"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-ea31a883-1480-496f-b6e8-da2916a7f672",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wbWOj9A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-7fa5b419-b978-4197-a250-ae7b4142438a",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}