Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vlEPLyA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ec53ead3-7e1e-4074-874c-85d6b9b7dd5f",
      "cw-d48fdbc2-a8d5-4dd6-97d6-329cc9dd3235"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-34c561e8-6464-46f4-993d-a7e6f0752b85",
    "manifestId": "https://dam.iuav.it/iuav/containers/vlEPLyA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d48fdbc2-a8d5-4dd6-97d6-329cc9dd3235"
  }
}