Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Lvx5ErA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-3e62a58e-ef99-4d70-bc8b-eb995dd6f0da",
      "cw-d95e8d56-ed20-4c7a-9a9f-78deec45f0c1"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-f16b3f24-4ea4-417c-b5f5-485a408c9d28",
    "manifestId": "https://dam.iuav.it/iuav/containers/Lvx5ErA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d95e8d56-ed20-4c7a-9a9f-78deec45f0c1"
  }
}