Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/Lo2r4Eq/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua18312344/Lo2r4ep",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d04a403e-745b-4f73-b7de-fe9d8064630a",
      "cw-6622065a-566c-4cf9-81e9-b9fd549cd594"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "Lo2r4Eq",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/Lo2r4Eq/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-6622065a-566c-4cf9-81e9-b9fd549cd594",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}