I am using a mac os machine and when I installed Putty I got this error. I have installed all the required software to install Putty but it didn't work.

I have installed :-

• MacPorts
• Homebrew
• Command Line Tools for Xcode
• Xcode (accepted the license agreement)

I resolved this issue using another application that needs to be installed.

The main problem is with X11.

I installed XQuartz

After installation open it and go to Application on top.

Click on Terminal and type putty. (command + N) - shortcut for opening terminal