Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/e509YOA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-161826b8-3dee-4c99-a6eb-4bb0d9b0bb18",
      "cw-2492206a-b221-4117-9c16-37ee8c3c8467"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-95cb8a32-d98d-429d-92ea-a1d9fd3ccf77",
    "manifestId": "https://dam.iuav.it/iuav/containers/e509YOA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-2492206a-b221-4117-9c16-37ee8c3c8467"
  }
}