Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/v78Om8A/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ed51bd6e-759f-485f-b0da-21761c7ea25b",
      "cw-11afbb25-6742-44d0-8638-9a231291937f"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-e9ea9959-a816-41d7-9b13-b6f8bbd7a99b",
    "manifestId": "https://dam.iuav.it/iuav/containers/v78Om8A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-11afbb25-6742-44d0-8638-9a231291937f"
  }
}