wordpress directory and its permissions
sudo chmod 755 /var/www/html/WEB_DIRECTORY/
sudo chmod 755 /var/www/html/WEB_DIRECTORY/wp-includes
sudo chmod 644 /var/www/html/WEB_DIRECTORY/.htaccess
sudo chmod 644 /var/www/html/WEB_DIRECTORY/wp-admin/index.php
sudo chmod 755 /var/www/html/WEB_DIRECTORY/wp-admin/js/
sudo chmod 755 /var/www/html/WEB_DIRECTORY/wp-content/themes
sudo chmod 755 /var/www/html/WEB_DIRECTORY/wp-content/plugins
sudo chmod 755 /var/www/html/WEB_DIRECTORY/wp-admin
sudo chmod 755 /var/www/html/WEB_DIRECTORY/wp-content
sudo chmod 640 /var/www/html/WEB_DIRECTORY/wp-config.php