Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vGE6Kze/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-940251ba-b7b9-44ae-be43-fae14164a211",
      "cw-adb05b97-4833-4fb3-a6ba-54cc536a5836"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-85dd5c3e-7ec3-47fc-bdbb-0df7a49425c4",
    "manifestId": "https://dam.iuav.it/iuav/containers/vGE6Kze/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-adb05b97-4833-4fb3-a6ba-54cc536a5836"
  }
}