Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AwqXaGZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-34afff11-4ef1-4f6d-bbca-63f8478dceea",
      "cw-cb5338d9-35c8-4968-9dea-08c882b1e438"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-06c21fcd-85ea-41ac-9809-0727b0e69626",
    "manifestId": "https://dam.iuav.it/iuav/containers/AwqXaGZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-cb5338d9-35c8-4968-9dea-08c882b1e438"
  }
}