Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vPW0bjZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-4c527361-d14b-4c06-a0b5-1a530a40f702",
      "cw-d357c6b9-d3a6-458c-9f60-1bcb08946448"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-189b43f7-6c36-4f1c-97ab-f123cebfe3b7",
    "manifestId": "https://dam.iuav.it/iuav/containers/vPW0bjZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d357c6b9-d3a6-458c-9f60-1bcb08946448"
  }
}