Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/JZqoJnA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-3344e519-8759-4bf6-9ee8-02847bb704c1",
      "cw-869d885d-d863-4c0f-977f-786e5daf344f"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-80bbef37-f82d-4b46-b89f-38001282e1f0",
    "manifestId": "https://dam.iuav.it/iuav/containers/JZqoJnA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-869d885d-d863-4c0f-977f-786e5daf344f"
  }
}