Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Zq04yXe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-4d8d8b89-f3f4-45c3-906d-83fd666a6b4c",
      "cw-4059e1f0-2a46-4ab3-849c-e918675053d1"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-e91e94a5-92bb-4cdb-a1db-6829f9df1aa4",
    "manifestId": "https://dam.iuav.it/iuav/containers/Zq04yXe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-4059e1f0-2a46-4ab3-849c-e918675053d1"
  }
}