Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/LaWqoyk/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua35040465/0M4J686",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-83ee2db4-df0c-41e9-a6ab-293e2b7adc78",
      "cw-52702cae-41f3-4fc6-ba32-9b7057b4d295"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-c6aeef07-319d-43f4-94fc-8d4b38217c0b",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/LaWqoyk/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-52702cae-41f3-4fc6-ba32-9b7057b4d295",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}