Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/JvazVwA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-882e410c-2d45-4c08-8d26-bf44d864a324",
      "cw-39dc5ae4-43a2-41ca-9416-05a3c90cff2c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-9fae6e15-c244-4982-85c0-c8a3a284d9cf",
    "manifestId": "https://dam.iuav.it/iuav/containers/JvazVwA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-39dc5ae4-43a2-41ca-9416-05a3c90cff2c"
  }
}