Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vLnl7De/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-97fd194b-eb9b-4b95-869c-4d858108b0a9",
      "cw-8b61e5e0-c0c5-4157-900f-d4a8bae49488"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-24b0394f-276e-4d0f-bc43-d555b078ad97",
    "manifestId": "https://dam.iuav.it/iuav/containers/vLnl7De/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-8b61e5e0-c0c5-4157-900f-d4a8bae49488"
  }
}