It's too simple, edit the plugin file with notepad like this:
open a terminal with command "cmd", and copy the code, mouse right click or Ctrl + V to paste the code into the terminal.
notepad.exe "%HOMEPATH%\AppData\Roaming\SketchUp\SketchUp 2024\SketchUp\Plugins\Rotateplanview.rb"find and remove the 's' from Line 76,
change "if File.exists?" to "if File.exist?" and save it.
reboot your SU 2024, it's ok now.