Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Be5XYXA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ab74d9b8-fac5-451e-8e85-e3649dd97d6d",
      "cw-7b43837f-34d2-4036-b78d-c6a8dc454dad"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-69dd7904-dfb2-4b4f-baa8-fa8f553054f6",
    "manifestId": "https://dam.iuav.it/iuav/containers/Be5XYXA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-7b43837f-34d2-4036-b78d-c6a8dc454dad"
  }
}