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_ua549135/5VRmADQ",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-67086ac2-3301-40cc-be27-9fb96bfec6e1",
      "cw-c4e9b024-bdd6-4535-a581-fbaa5128c92a"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-dcb28660-8f0e-44e9-bc62-afe9d9b2c8d2",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wE4Pdoq/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-c4e9b024-bdd6-4535-a581-fbaa5128c92a",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}