Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/ArPLDpZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-16a6ae18-6238-402c-af15-555053911760",
      "cw-65398e58-6856-4d27-b775-e7d04a71a768"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-814e67e4-d869-4a10-8496-8846870dbc60",
    "manifestId": "https://dam.iuav.it/iuav/containers/ArPLDpZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-65398e58-6856-4d27-b775-e7d04a71a768"
  }
}