Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/pvlGj3Z/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-52a7ac21-4f1f-49e0-a6f3-1a35dd4c6242",
      "cw-f3cd92e4-3edb-497b-980e-e3321acabe80"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-f571bf37-8884-434e-b81b-fcc40a14c2cc",
    "manifestId": "https://dam.iuav.it/iuav/containers/pvlGj3Z/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-f3cd92e4-3edb-497b-980e-e3321acabe80"
  }
}