Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/wQgyVZY/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua35027999/wrWG6QJ",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-57dd1441-26db-46c1-b94e-e3cd11e32a3e",
      "cw-91522d95-ed77-4112-80fa-553bdac62cfd"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-f93b3c86-2ca3-440c-aad5-add619e92759",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wQgyVZY/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-91522d95-ed77-4112-80fa-553bdac62cfd",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}