Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/02mjY7j/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua548038/57d9x6q",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d46f1dce-50e2-4693-87e9-5ec9b2d3a62d",
      "cw-eb1e24f0-6e2f-4d6d-8fcc-6739ed8dd030"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-a7bd8619-464c-40e2-b3ae-2760a6276273",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/02mjY7j/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-eb1e24f0-6e2f-4d6d-8fcc-6739ed8dd030",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}