Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/wrW1VOn/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua35004502/LeWVEgV",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-daef52c3-b9f0-414a-a20d-ed57574ac405",
      "cw-ea84dbe0-62d8-423c-b645-60d6b660a1c3"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-bddaff3f-0ae8-4cce-b024-045237cbfbc2",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wrW1VOn/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-ea84dbe0-62d8-423c-b645-60d6b660a1c3",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}