Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/v2DE8xe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d558dfdb-d1bb-4e5d-9ac1-27bb747dab20",
      "cw-30948aad-a9a2-4039-a7dd-d3a0f187e92a"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-27f8ba6c-01e5-48d5-a7d6-a6322d1cc5c4",
    "manifestId": "https://dam.iuav.it/iuav/containers/v2DE8xe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-30948aad-a9a2-4039-a7dd-d3a0f187e92a"
  }
}