Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/QvPbQXe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-8c34ddac-458d-43d0-908d-634f86a37627",
      "cw-3a005f2d-b921-4a34-972e-9c9440e5699b"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-9860a61a-34d3-441b-85e6-168cd33f5bd3",
    "manifestId": "https://dam.iuav.it/iuav/containers/QvPbQXe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-3a005f2d-b921-4a34-972e-9c9440e5699b"
  }
}