Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/pZ8mpVv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-02e21e26-695b-422d-9bb3-a1ed0686a04f",
      "cw-b37df3ed-f81c-487e-8022-29a0ac420732"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-9a5b57c2-927a-4bb8-8c0d-e512aa7ef52a",
    "manifestId": "https://dam.iuav.it/iuav/containers/pZ8mpVv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-b37df3ed-f81c-487e-8022-29a0ac420732"
  }
}