Setp 1 : sudo chown -R $USER ~/.composer/
Setp 2 : composer global require cpriego/valet-linux
Setp 3 :sudo nano ~/.profile
put below code inside and save
PATH="$HOME/.composer/vendor/bin:$PATH"Step 4 : source ~/.profile
Step 5 : sudo apt-get install network-manager libnss3-tools jq xsel