You may note that this is a two year old post that the author never replied. Basically a dead post
You can assume that the Lightroom is several versions old than what you have now
You can assume that the OS is several updates/fixes older than what you have now.
Note, you state desktop version. That may or not be Classic, Adobe often refers to that lousy cloud based copy as Lightroom Desktop, lately as Lightroom Ecosystem. If your Lightroom Classic is v11.5 then Ok, this community, if your desktop Lightroom is 5.5 then the Lightroom Ecosystem (Cloud Based) community.
Also, please include your system info as LrC reports it, following is a SOP on that
Please post your System Information as Lightroom Classic (LrC) reports it. In LrC click on Help, then System Info, then Copy. Paste that information into a reply. Please present all information from first line down to and including Plug-in Info. Info after Plug-in info can be cut as that is just so much dead space to us non-Techs.