Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/e16nr1Z/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-b2fd2b26-231b-4ffd-bb8a-184baf646a6c",
      "cw-fe7827a1-8637-4ad5-acd4-2965bb878084"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-fb77dbcd-773a-4ba6-8775-a9c8727239f3",
    "manifestId": "https://dam.iuav.it/iuav/containers/e16nr1Z/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-fe7827a1-8637-4ad5-acd4-2965bb878084"
  }
}