Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/v2534QZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-b1cc89e3-bea0-48fe-94fe-db3d0c91e662",
      "cw-ffb43061-0df0-4d1f-bd62-29be9c291ff5"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-b8b5c7ca-243f-46ec-b18d-1f21ee9bbe18",
    "manifestId": "https://dam.iuav.it/iuav/containers/v2534QZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-ffb43061-0df0-4d1f-bd62-29be9c291ff5"
  }
}