Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AkrKokv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-da9eaa5b-9cba-4989-b54c-8bf404a33d6f",
      "cw-d6bcd772-0600-4d8f-8322-a96f924d42e9"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-030bc331-5dbe-41e0-84f5-cadeb0525e96",
    "manifestId": "https://dam.iuav.it/iuav/containers/AkrKokv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d6bcd772-0600-4d8f-8322-a96f924d42e9"
  }
}