Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/EZn4bwA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-77ab9a2a-07a9-480c-aaf2-d87ef9b3aa6a",
      "cw-6ce3606e-0bef-424e-abed-5f7a825c475f"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-6b2f69e1-3d30-41f5-97c4-093a4221d8fb",
    "manifestId": "https://dam.iuav.it/iuav/containers/EZn4bwA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-6ce3606e-0bef-424e-abed-5f7a825c475f"
  }
}