OpenConnect issue solution-seeking：Could not open vpnc.log: 5

please I need some guidance and help with a OpenConnect-GUI issue. I'm using OpenConnect-GUI for Windows. I'm getting an error message

Could not open C:/Users/XXXX/AppData/Local/Temp\vpnc.log: 5

Uninstalling and Reinstalling the OpenConnect didn't help at all. I suspect that OpenConnect is not uninstalling correctly, which causes mistakes from installing it to stay in the machine. Is there a way to fix the vpnc.log issue or completely clean system to get a fresh start with OC-GUI? Thanks. BTW，the Attached is the OpenConnect-GUI log.1113log.txt