Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/wkGxgJp/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua600939/0njMrkl",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-859418a0-465c-4f3d-9f0e-31a85ed95186",
      "cw-5d26210e-15b4-4349-8bee-6f43a704b8be"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-fd3c8c03-87a8-4f4c-a672-519520152817",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wkGxgJp/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-5d26210e-15b4-4349-8bee-6f43a704b8be",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}