Autocompletion is not working!
ps aux | grep SourceKit | grep -v grep | awk '{print $2}' | xargs kill -9
Or
# close Xcode
rm -rf ~/Library/Developer/Xcode/DerivedData/*
rm -rf ~/Library/Caches/com.apple.dt.Xcode
# restart open Xcode
Autocompletion is not working!
ps aux | grep SourceKit | grep -v grep | awk '{print $2}' | xargs kill -9
Or
# close Xcode
rm -rf ~/Library/Developer/Xcode/DerivedData/*
rm -rf ~/Library/Caches/com.apple.dt.Xcode
# restart open Xcode