sudo a2enmod rewrite
sudo systemctl restart apache2
sudo nano /etc/apache2/sites-available/000-default.conf
<VirtualHost *:80>
<Directory /var/www/html>
Options Indexes FollowSymLinks
AllowOverride All
Require all granted
</Directory>
. . .
</VirtualHost>
sudo apache2ctl configtest
sudo systemctl restart apache2
sudo nano /var/www/html/.htaccess
RewriteEngine on
RewriteRule ^about$ about.html [NC]