cd mywebsite
util/composer.phar install
-Make sure the folder *view/smarty3* exists and is writable by the webserver user
+Make sure the folder *view/smarty3* exists and is writable by the webserver user, in this case `www-data`
mkdir view/smarty3
- chmod www-data:www-data view/smarty3
+ chown www-data:www-data view/smarty3
+ chmod 775 view/smarty3
Get the addons by going into your website folder.