Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vaXP3wZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-75d34a7b-b8a1-47c9-b464-37e94947835c",
      "cw-df7d3ba6-2e31-46cb-9359-c4384310ab67"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-d77aece6-5ef2-443e-a914-8994f9c2666c",
    "manifestId": "https://dam.iuav.it/iuav/containers/vaXP3wZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-df7d3ba6-2e31-46cb-9359-c4384310ab67"
  }
}