seek help!!
I'm using sketchup version 2021.
If you install and run FREDO6 LIBRARY, an error box appears.

I don't know what went wrong

Error Loading File Fredo6_!LibFredo6.rb
Error: #<ArgumentError: invalid byte sequence in UTF-8>
c:/users/subin/appdata/roaming/sketchup/sketchup 2021/sketchup/plugins/fredo6_!libfredo6/lib6core.rbe:821:in match' c:/users/subin/appdata/roaming/sketchup/sketchup 2021/sketchup/plugins/fredo6_!libfredo6/lib6core.rbe:821:in block (2 levels) in load_from_config'
c:/users/subin/appdata/roaming/sketchup/sketchup 2021/sketchup/plugins/fredo6_!libfredo6/lib6core.rbe:820:in each' c:/users/subin/appdata/roaming/sketchup/sketchup 2021/sketchup/plugins/fredo6_!libfredo6/lib6core.rbe:820:in block in load_from_config'
c:/users/subin/appdata/roaming/sketchup/sketchup 2021/sketchup/plugins/fredo6_!libfredo6/lib6core.rbe:818:in foreach' c:/users/subin/appdata/roaming/sketchup/sketchup 2021/sketchup/plugins/fredo6_!libfredo6/lib6core.rbe:818:in load_from_config'
c:/users/subin/appdata/roaming/sketchup/sketchup 2021/sketchup/plugins/fredo6_!libfredo6/lib6core.rbe:1233:in block in load_all_plugins' c:/users/subin/appdata/roaming/sketchup/sketchup 2021/sketchup/plugins/fredo6_!libfredo6/lib6core.rbe:1233:in each'
c:/users/subin/appdata/roaming/sketchup/sketchup 2021/sketchup/plugins/fredo6_!libfredo6/lib6core.rbe:1233:in load_all_plugins' c:/users/subin/appdata/roaming/sketchup/sketchup 2021/sketchup/plugins/fredo6_!libfredo6/top_libfredo6.rbe:310:in startup'
C:/Users/subin/AppData/Roaming/SketchUp/SketchUp 2021/SketchUp/Plugins/Fredo6_!LibFredo6.rb:68:in process' C:/Users/subin/AppData/Roaming/SketchUp/SketchUp 2021/SketchUp/Plugins/Fredo6_!LibFredo6.rb:76:in module:LibFredo6_Loader'
C:/Users/subin/AppData/Roaming/SketchUp/SketchUp 2021/SketchUp/Plugins/Fredo6_!LibFredo6.rb:30:in `<top (required)>'