Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Z81OEWv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-61ca49a0-e48c-4204-bed1-4d788020ab5f",
      "cw-5a83ff4c-d7f7-4bff-bfb3-ff8dd199181e"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-5f9ffbb4-69c7-4615-96df-afc3c3a6726e",
    "manifestId": "https://dam.iuav.it/iuav/containers/Z81OEWv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-5a83ff4c-d7f7-4bff-bfb3-ff8dd199181e"
  }
}