Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/ZpDBNPZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-74d279c3-123d-4bd8-88df-f19c02004963",
      "cw-ce4c833c-fa49-42d5-8785-cfd39c35c81d"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-3aa8e3d3-6128-46e9-a5dd-93d458cc57f9",
    "manifestId": "https://dam.iuav.it/iuav/containers/ZpDBNPZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-ce4c833c-fa49-42d5-8785-cfd39c35c81d"
  }
}