Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/e50dkXA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-003fe3e0-8b96-4dd4-a2c2-997f4f64e58f",
      "cw-4cd7c19b-deeb-43ca-b726-c08de75d2956"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-267ffd3b-92c1-481c-80ac-3cb91784ae1d",
    "manifestId": "https://dam.iuav.it/iuav/containers/e50dkXA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-4cd7c19b-deeb-43ca-b726-c08de75d2956"
  }
}