Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vxBk1Ee/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-1d45e64e-8424-41ba-9a68-77ec37cf7b6e",
      "cw-2e241220-8afe-460d-aa99-a56c6dce5dcd"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-5138334f-205d-47a1-8f53-f23f17f7b092",
    "manifestId": "https://dam.iuav.it/iuav/containers/vxBk1Ee/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-2e241220-8afe-460d-aa99-a56c6dce5dcd"
  }
}