Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vaX402Z/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-6f86bf62-de36-48e8-9d65-15dd1b833f42",
      "cw-01478e59-83e0-4059-8c56-063a4d28043f"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-fda8274b-22c2-4563-a015-3ee57395e1c2",
    "manifestId": "https://dam.iuav.it/iuav/containers/vaX402Z/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-01478e59-83e0-4059-8c56-063a4d28043f"
  }
}