laravel composer update : the requested PHP extension dom is missing from your system

Question

I am using ubuntu 16.04, laravel 5.2 when i run update composer in my project directory its showing \"the requested PHP extension dom is missing from your system\" i checke

Answer 1

You might have some missing dependencies, so first run

sudo apt-get -f install

Then install php-xml

sudo apt-get install php-xml

This worked for me.