Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/pvl9P3A/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-42b21e99-10a2-49c6-8511-afc7fd63b8ae",
      "cw-a4beb6b4-22d2-4ce3-a4a5-1123a386ad20"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-00346a32-911e-4d34-9a45-d9334bed65ba",
    "manifestId": "https://dam.iuav.it/iuav/containers/pvl9P3A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-a4beb6b4-22d2-4ce3-a4a5-1123a386ad20"
  }
}