Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/BeyjXJZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d8980da1-42c9-4159-90c2-fbdbb1ceb195",
      "cw-16245d2a-b65a-477a-98c7-0351c57bf3c2"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-c2ed99a8-2567-4fe7-bf65-130cd5b96b9b",
    "manifestId": "https://dam.iuav.it/iuav/containers/BeyjXJZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-16245d2a-b65a-477a-98c7-0351c57bf3c2"
  }
}