Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/9AJo3De/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-9c8ce340-3dbd-42f8-9764-444834c7d182",
      "cw-ef2b13ff-3559-456a-a904-f95593ca9627"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-eeb84bdb-86e9-4b3a-8a5d-3c4d9c5a56fb",
    "manifestId": "https://dam.iuav.it/iuav/containers/9AJo3De/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-ef2b13ff-3559-456a-a904-f95593ca9627"
  }
}