Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/xZjXxqA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d82f6c11-75c2-4300-b90e-1b926b1f7b9b",
      "cw-42457d1b-8bc0-4356-abe3-f16839a13eda"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-232f6e8d-1be2-4a26-98b9-2a26061dbd6e",
    "manifestId": "https://dam.iuav.it/iuav/containers/xZjXxqA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-42457d1b-8bc0-4356-abe3-f16839a13eda"
  }
}