The mcrypt extension is missing. Please check your PHP configuration

Question

I just followed the tutorial located at https://www.digitalocean.com/community/articles/how-to-install-linux-apache-mysql-php-lamp-stack-on-ubuntu while fixing multiple other er

Answer 1

I've followed the exact tutorial with OP on digital ocean. The only steps that missing is to

sudo php5enmod mcrypt
sudo service apache2 restart 

and the error gone after restarting the apache service