What is this, and why doesn't it work

spaghetti-code.sh

if [[ -L "$0" ]]; then
        source $(dirname $(readlink -e $0))/config 
else
        source $(dirname "$0")/config
fi

[[ "$SERVICE" == "" ]] && {
        echo "Couldn't load config file, please edit config.example and rename it to config"
        logger -t minecraft-init "Couldn't load config file, please edit config.example and rename it to conf$
        exit
}

user@server:~/minecraft-init$ service minecraft screen
sed: -e expression #1, char 1: unknown command: `"'
/etc/init.d/minecraft: line 35: : No such file or directory
Couldn't load config file, please edit config.example and rename it to config