Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vxBjXre/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-43969efb-f0bf-451b-b7de-a03bfaa70693",
      "cw-480ddb24-387d-49f9-8486-c36b49250f47"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-dda20a0d-bcd0-4939-a3cf-b3b2fde7d746",
    "manifestId": "https://dam.iuav.it/iuav/containers/vxBjXre/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-480ddb24-387d-49f9-8486-c36b49250f47"
  }
}