Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/xZj42wA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-95d18b48-8874-4a1e-89af-219bf30d91f5",
      "cw-33759298-0cbd-42a0-b4ce-05073b40acf8"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-a7acde62-2e6a-45ff-8a8a-14150ec0408b",
    "manifestId": "https://dam.iuav.it/iuav/containers/xZj42wA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-33759298-0cbd-42a0-b4ce-05073b40acf8"
  }
}