Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/5v2XMQe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-18966fb4-260d-4b03-9a5b-02798413dd5b",
      "cw-4115caa5-91eb-47b8-b923-807f27b5afc6"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-eff99e0f-cf72-41df-9ecf-9cdd8449c53f",
    "manifestId": "https://dam.iuav.it/iuav/containers/5v2XMQe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-4115caa5-91eb-47b8-b923-807f27b5afc6"
  }
}