Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/e0Bo9Rv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-8e7e00be-3125-4cb3-bebc-217f516c1367",
      "cw-2f477c7d-e5b6-4c16-a30a-35467f44aa75"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-a867c644-aee8-4654-9c42-b6d71d584ec4",
    "manifestId": "https://dam.iuav.it/iuav/containers/e0Bo9Rv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-2f477c7d-e5b6-4c16-a30a-35467f44aa75"
  }
}