Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/LoQdx3X/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua600574/5volOPq",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-760ad132-2d41-4a26-8c17-e644e54f22ab",
      "cw-b8f79a21-9bee-4ae5-801c-18fb23700737"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-63dbc283-e4e5-4556-b28c-3b8e46d026b9",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/LoQdx3X/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-b8f79a21-9bee-4ae5-801c-18fb23700737",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}