Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Awqm8MZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ab9b41d4-e8e8-4772-bc63-0642169da995",
      "cw-a0270960-5166-46d9-aa61-ac32be2833ba"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-ccef7b48-080e-4cde-9301-cc081e5f8362",
    "manifestId": "https://dam.iuav.it/iuav/containers/Awqm8MZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-a0270960-5166-46d9-aa61-ac32be2833ba"
  }
}