I'm korean user. libfredo6 errors 2019. help me

[kimjunhwy]

Fredo6_!LibFredo6.rb 파일 로드 오류
Error: #<ArgumentError: invalid byte sequence in UTF-8>
c:/users/김준휘/appdata/roaming/sketchup/sketchup 2019/sketchup/plugins/fredo6_!libfredo6/top_libfredo6.rbe:52:in gsub' c:/users/김준휘/appdata/roaming/sketchup/sketchup 2019/sketchup/plugins/fredo6_!libfredo6/top_libfredo6.rbe:52:in get_dir_from_ENV'
c:/users/김준휘/appdata/roaming/sketchup/sketchup 2019/sketchup/plugins/fredo6_!libfredo6/top_libfredo6.rbe:415:in dir_appdata' c:/users/김준휘/appdata/roaming/sketchup/sketchup 2019/sketchup/plugins/fredo6_!libfredo6/top_libfredo6.rbe:213:in startup'
C:/Users/김준휘/AppData/Roaming/SketchUp/SketchUp 2019/SketchUp/Plugins/Fredo6_!LibFredo6.rb:63:in process' C:/Users/김준휘/AppData/Roaming/SketchUp/SketchUp 2019/SketchUp/Plugins/Fredo6_!LibFredo6.rb:70:in module:LibFredo6_Loader'
C:/Users/김준휘/AppData/Roaming/SketchUp/SketchUp 2019/SketchUp/Plugins/Fredo6_!LibFredo6.rb:28:in `<top (required)>'

[Arc]

You'd better change a english user name.