Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/9AVy65v/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-5a7389f3-5c11-4452-b606-dc3809b9a84a",
      "cw-97fc9253-c202-4c28-9fc4-1a82f414e129"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-a014ab62-6062-48cd-90cd-64d87a27f371",
    "manifestId": "https://dam.iuav.it/iuav/containers/9AVy65v/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-97fc9253-c202-4c28-9fc4-1a82f414e129"
  }
}