Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/wQK2g4b/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua598762/02kb8Nv",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-465c9494-2aab-49a9-868c-657c9efbb9fb",
      "cw-8c927ade-bcbf-4452-9823-f661e8c586cc"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-074bf615-ab40-4a94-ad3c-b54342c91141",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wQK2g4b/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-8c927ade-bcbf-4452-9823-f661e8c586cc",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}