macos - Charles 4.2.8 cannot configure your proxy settings while it is on a read-only volume Mac OS Catalina - Super User

Fri May 07 2021 10:17:36 GMT+0000 (Coordinated Universal Time)

Saved by @canering

 sudo chown -R root "/Applications/Charles.app/Contents/Resources"
 sudo chmod -R u+s "/Applications/Charles.app/Contents/Resources"