my zshrc file with prezto sourcing and powerlevel9 config

.zshrc

POWERLEVEL9K_MODE='awesome-patched'
# Source Prezto.
if [[ -s "${ZDOTDIR:-$HOME}/.zprezto/init.zsh" ]]; then
  source "${ZDOTDIR:-$HOME}/.zprezto/init.zsh"
fi

#will show the context in the tab title
case $TERM in
    xterm*)
        precmd () {print -Pn "\e]0;%n@%m\a"}
        ;;
esac

#powerlevel9k customization
POWERLEVEL9K_PROMPT_ON_NEWLINE=true
POWERLEVEL9K_CUSTOM_INTERNET_STATUS_BACKGROUND="black"
POWERLEVEL9K_LEFT_PROMPT_ELEMENTS=( os_icon context dir )
POWERLEVEL9K_RIGHT_PROMPT_ELEMENTS=( 'vcs' 'load' 'ram_joined')