Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vaXwLDZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-6113fcbe-e026-4998-a37e-020800444657",
      "cw-38a2b0cb-1299-4e6a-b2c2-65e878d33c77"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-c4c678c4-1559-42d8-b431-abe2c0f7e0f7",
    "manifestId": "https://dam.iuav.it/iuav/containers/vaXwLDZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-38a2b0cb-1299-4e6a-b2c2-65e878d33c77"
  }
}