Please post your Apache vhost config file.

I fixed the 404 by reverting what I did in step 3.

Here is my apache vhost config:

<VirtualHost *:443>
    # The ServerName directive sets the request scheme, hostname and port that
    # the server uses to identify itself. This is used when creating
    # redirection URLs. In the context of virtual hosts, the ServerName
    # specifies what hostname must appear in the request's Host: header to
    # match this virtual host. For the default virtual host (this file) this
    # value is not decisive as it is used as a last resort host regardless.
    # However, you must set it for any further virtual host explicitly.

    ServerName houg.co

    ServerAdmin webmaster@localhost
    DocumentRoot /var/www/html

    SSLEngine on
    SSLCertificateFile /etc/ssl/houg.co.crt
    SSLCertificateKeyFile /etc/ssl/houg.co.key
    SSLCertificateChainFile /etc/ssl/COMODORSAExtendedValidationSecureServerCA.crt

    #ProxyPassMatch ^/(.*\.php(/.*)?)$ fcgi://127.0.0.1:9000/var/www/html/$1

    # for a https server
    Protocols h2 http/1.1

    # for a http server
    #Protocols h2c http/1.1

    # Available loglevels: trace8, ..., trace1, debug, info, notice, warn,
    # error, crit, alert, emerg.
    # It is also possible to configure the loglevel for particular
    # modules, e.g.
    #LogLevel info ssl:warn

    ErrorLog ${APACHE_LOG_DIR}/error.log
    CustomLog ${APACHE_LOG_DIR}/access.log combined

    # For most configuration files from conf-available/, which are
    # enabled or disabled at a global level, it is possible to
    # include a line for only one particular virtual host. For example the
    # following line enables the CGI configuration for this host only
    # after it has been globally disabled with "a2disconf".
    #Include conf-available/serve-cgi-bin.conf
</VirtualHost>

<VirtualHost *:80>
   ServerName houg.co
   Redirect permanent / https://houg.co/
</VirtualHost>

# vim: syntax=apache ts=4 sw=4 sts=4 sr noet