Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/3ZpOxle/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-1a80b1b2-50ba-4f9b-bb4d-a1476fd3ad5b",
      "cw-d520e80d-3a3f-46a9-9d05-5c8ac55535e8"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-78082188-900c-4751-b652-692dd1a23ab3",
    "manifestId": "https://dam.iuav.it/iuav/containers/3ZpOxle/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d520e80d-3a3f-46a9-9d05-5c8ac55535e8"
  }
}