Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/9ZN3V1v/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-44830412-66eb-4def-b463-798128922df4",
      "cw-65104c8c-aa38-43c4-a661-2a0f58784e61"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-5da7acd2-df09-4f03-a264-f1dcf59e4213",
    "manifestId": "https://dam.iuav.it/iuav/containers/9ZN3V1v/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-65104c8c-aa38-43c4-a661-2a0f58784e61"
  }
}