eeror adding 2 Domain to Apache virtual host

Your configuration is wrong (for both of them). If you think of

<VirtualHost>
</VirtualHost>

as defining a "container", the

<Directory>
</Directory>

directives have to be "inside" the container. The way you have them, the directory definitions aren't in any virtual host (in either case).

You need to do each of them like this:

<VirtualHost *:80>

  # Admin email and server name
  #
  ServerName  ...
  ServerAlias www. ...

  # The server will not send it's signature
  #
  ServerSignature Off  #optional

  # Index file and document root
  #
  DocumentRoot /my/doc/root
  DirectoryIndex index.html  #index.php  If you're going to use WP, you need this

  # Turn on the rewrite engine (mod_rewrite)
  #
  <IfModule mod_rewrite.c>
    RewriteEngine on     # If you're going to use WP, you probably need this
  </IfModule>

  # The docroot
  #
  <Directory /my/doc/root>
    AllowOverride All
    Options -Indexes -MultiViews +SymLinksIfOwnerMatch
    Require all granted  
  </Directory>

  # Some directory
  #
  <Directory /some/directory/somewhere>
    AllowOverride All
    Options -Indexes -MultiViews +SymLinksIfOwnerMatch
    Require all granted  
  </Directory>

  # Some other directory
  #
  <Directory /some/other/directory/somewhere>
    AllowOverride All
    Options -Indexes -MultiViews +SymLinksIfOwnerMatch
    Require all granted  
  </Directory>

  # Log file locations
  #
  LogLevel warn
  ErrorLog  "| /usr/bin/rotatelogs -l /var/log/...
  CustomLog "| /usr/bin/rotatelogs -l /var/log/...

</VirtualHost>

This assumes you're using Apache 2.4. If you're using Apache 2.2, the Require directives will be different. Others may be as well. RTFM.

Put each VirtualHost definition in a separate file and then enable and disable them with a2ensite (for enablement) and a2dissite (for disablement).

-- sw