I followed the tutorial on http://sven.webiny.com/subversion-on-cpanel-3-with-centos-55-and-easyapache-32/ to allow mod_dav_svn (HTTP) access to SVN Repositories on my server.
Everything works fine, But the problem is on those hosts having .htaccess mod_rewrite on their web roots (like Wordpress for example), The mod_rewrite supersedes DAV_SVN and location directive (of Apache Conf.), Which is boring and stops me from being able to make /svn location use DAV_SVN.
A target example site is abiusx.com which doesn't always work on http://abiusx.com/svn
Well the answer was, you can't put another handler on roots of your virtual host, unless you specify all the error handler documents:
<IfModule dav_svn_module>
<IfModule authz_svn_module>
<VirtualHost 127.0.1.1 178.162.154.252 178.162.154.252:443>
ServerName abiusx.com
SSLEngine on
SSLCertificateFile /etc/httpd/conf/ssl.crt/server.crt
SSLCertificateKeyFile /etc/httpd/conf/ssl.key/server.key
ErrorDocument 400 default
ErrorDocument 401 default
ErrorDocument 403 default
ErrorDocument 404 default
ErrorDocument 405 default
ErrorDocument 408 default
ErrorDocument 410 default
ErrorDocument 411 default
ErrorDocument 412 default
ErrorDocument 413 default
ErrorDocument 414 default
ErrorDocument 415 default
ErrorDocument 500 default
ErrorDocument 501 default
ErrorDocument 502 default
ErrorDocument 503 default
<Location />
Options -All
DAV svn
SVNParentPath /home/abiusx/svn/
AuthzSVNAccessFile /home/abiusx/svn/conf/authz
Satisfy Any
Require valid-user
AuthType Basic
AuthName "AbiusX Subversion"
AuthUserFile /home/abiusx/svn/conf/.htpasswd
SVNAutoversioning on
</Location>
</VirtualHost>
## valid certificate
</IfModule>
</IfModule>