Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vDWbrnZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-aa57c382-318c-4980-9e14-dba391956dbe",
      "cw-d88759ab-8dfe-4b04-9638-1d6e7aca6ca1"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-03218dd2-6a88-4c3d-a158-4780f50f52bb",
    "manifestId": "https://dam.iuav.it/iuav/containers/vDWbrnZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d88759ab-8dfe-4b04-9638-1d6e7aca6ca1"
  }
}