Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vPWQR7Z/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-cdd0a070-c62b-4e65-b234-9966bfe951eb",
      "cw-a26a6c89-537c-4f58-82f8-89f2c6a65308"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-d8f17859-2380-419d-af40-4b4f5aa0083b",
    "manifestId": "https://dam.iuav.it/iuav/containers/vPWQR7Z/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-a26a6c89-537c-4f58-82f8-89f2c6a65308"
  }
}