Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/pZ8gVye/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-40a6a544-0fe6-46a2-a3f4-947d376c7eae",
      "cw-e0e9c46f-e7a3-4ee4-95b4-a6999a24a32b"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-8bf1b405-233e-4e6a-af3b-d4baaf0c1e98",
    "manifestId": "https://dam.iuav.it/iuav/containers/pZ8gVye/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-e0e9c46f-e7a3-4ee4-95b4-a6999a24a32b"
  }
}