Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Be5xlqA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-7c230f40-dd8b-4a76-9a6d-2b983d4e9792",
      "cw-813785c3-d544-4a46-a46f-7b1b70521970"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-bc39d2fc-b105-45e3-90c1-9c7d77d4f6b7",
    "manifestId": "https://dam.iuav.it/iuav/containers/Be5xlqA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-813785c3-d544-4a46-a46f-7b1b70521970"
  }
}