Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Bey1xde/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ef9a29c8-824b-4eed-8690-4c8212dc76a1",
      "cw-a536a2de-2f70-47fd-b541-0e5e1f3b51db"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-69302675-0769-4559-9454-1f51a7b3d11e",
    "manifestId": "https://dam.iuav.it/iuav/containers/Bey1xde/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-a536a2de-2f70-47fd-b541-0e5e1f3b51db"
  }
}