Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/nv7D3jA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-0916efa5-15a1-4901-baa3-3c0bb7a994bc",
      "cw-d9820322-1de5-4a3d-8fca-8f8459f61591"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-a48ce9c4-8085-4a7a-b165-7c8850f00dfb",
    "manifestId": "https://dam.iuav.it/iuav/containers/nv7D3jA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d9820322-1de5-4a3d-8fca-8f8459f61591"
  }
}