Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vaX83EZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-e907693f-4f82-495c-8c33-50028b862986",
      "cw-7d61112d-7c34-4279-a45b-69296b96d572"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-98dfd0f7-91b2-46a9-8539-0e9101310718",
    "manifestId": "https://dam.iuav.it/iuav/containers/vaX83EZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-7d61112d-7c34-4279-a45b-69296b96d572"
  }
}