Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/ZbQzQ8e/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-bbb11aec-11d1-49f5-98f7-10a995d45989",
      "cw-72e7c152-229f-4c6b-b555-e5cc4b5748af"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-69112278-745d-439b-ad42-467bdcf063c9",
    "manifestId": "https://dam.iuav.it/iuav/containers/ZbQzQ8e/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-72e7c152-229f-4c6b-b555-e5cc4b5748af"
  }
}