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_ua598762/0njMWXn",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-f29eea2f-7f34-4742-a4a3-dfb076fc44f6",
      "cw-20712a4b-22f0-4075-8f5f-8d20101d7b14"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-dcef98d9-7a48-4493-9823-40663e4b638f",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wQK2g4b/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-20712a4b-22f0-4075-8f5f-8d20101d7b14",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}