Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/e50Q8XA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d2cdd720-5cd8-41ba-8240-e51a3ea69235",
      "cw-b59f25e0-af3d-4f2a-9a01-ddd5f6d7d9b7"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-0dae8474-2158-4ceb-a8bf-1d54bc0100f2",
    "manifestId": "https://dam.iuav.it/iuav/containers/e50Q8XA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-b59f25e0-af3d-4f2a-9a01-ddd5f6d7d9b7"
  }
}