Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/Lmy9DDa/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua547781/wj7yM6v",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-28f6b65a-1c6d-4116-a33a-2cf6d259fbe2",
      "cw-9bc1b2d2-4947-4a3c-9a7b-e7281b7685ff"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-cfd8450d-7b98-4c4e-9555-fdbe835684a5",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/Lmy9DDa/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-9bc1b2d2-4947-4a3c-9a7b-e7281b7685ff",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}