Second issue that I have found after upgrade my mac to Mojave is that Git stops working. When run git in terminal, it throws the error:
xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun
This means the command line tools of Xcode is not working properly. It needs either reset or update. For me, the fix is to update it:
xcode-select --install
Jackie Chen's IT Workshop 