LDAP authenticate problem

[Paul Nguyen]

I’m running SVN 1.9.3 (r1718519), on Ubuntu 16-04 with Server version: 
Apache/2.4.18 (Ubuntu).
Problem is when a user failed 3 times with his password, the account doesn’t 
get locked but it keeps prompting. It looks like it authenticates against every 
single file in the path of the repo that user wants to access.
The apache.conf:

<VirtualHost *:80>
  ServerName <server name>
  ErrorLog /var/log/svn/docs_LDAP_error.log
  CustomLog /var/log/svn/docs_LDAP_access.log common
  <Location />
    DAV svn
    SVNPath /var/svnrepo/docs
    ##LDAP
     AuthName "docs Repo - Active Directory Authentication"
    AuthBasicProvider ldap
    AuthType Basic
    AuthLDAPGroupAttribute member
    AuthLDAPGroupAttributeIsDN On
    AuthLDAPURL "ldap://<ldap 
server>:389/cn=Users,dc=chp,dc=com?sAMAccountName?sub?(objectClass=*)"
    AuthLDAPBindDN "app_subvers...@chp.com"
    AuthLDAPBindPassword "<password>"
    require valid-user
    ##
    RequestHeader edit Destination ^https: http: early
    AuthzSVNAccessFile /var/svnrepo/auth/docs-subdomain
    SetInputFilter DEFLATE
    SetOutputFilter DEFLATE
    SVNIndexXSLT /.chp/svnindex.xsl
  </Location>
</VirtualHost>


Is there a way to lock out an user account after 3 failed attempts as it's 
supposed to ?

Thanks,
Paul