Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Lvxoq3Z/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ff5b707f-ffcb-483f-b272-12ede8d6762c",
      "cw-84e85bd8-bd16-4005-b5cb-f43cef0cc188"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-2ab8d946-96b1-4f86-acd6-32b75be3ddef",
    "manifestId": "https://dam.iuav.it/iuav/containers/Lvxoq3Z/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-84e85bd8-bd16-4005-b5cb-f43cef0cc188"
  }
}