Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/9AJoQbe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-4b27bcb2-4472-4aab-9dc4-394c436fc330",
      "cw-47c98f2d-a39a-4d4f-a564-6c3a9bfe3b58"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-24c8d68a-d43c-48b3-9878-2868ebba24f9",
    "manifestId": "https://dam.iuav.it/iuav/containers/9AJoQbe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-47c98f2d-a39a-4d4f-a564-6c3a9bfe3b58"
  }
}