AWS ec2 en_US.UTF-8 issue

https://aws.amazon.com/amazon-linux-ami/2012.03-release-notes/

-bash: warning: setlocale: LC_CTYPE: cannot change locale (UTF-8)
[ec2-user@ip-10-136-14-68 ~]$ vi ~/.bash_profile
[ec2-user@ip-10-136-14-68 ~]$ 


    # .bash_profile

# Get the aliases and functions
if [ -f ~/.bashrc ]; then
        . ~/.bashrc
fi

# User specific environment and startup programs

PATH=$PATH:$HOME/bin

export PATH

export LC_CTYPE="en_US.UTF-8"

how do you solve this?