Redmine restart erro

When i restart Redmine, an erro happend like this:

[root@iZ23lttzrggZ lmmbao]# service httpd start
Starting httpd: Syntax error on line 42 of /etc/httpd/conf.d/subversion.conf:
Invalid command 'PerlLoadModule', perhaps misspelled or defined by a module not included in the server configuration
                                                           [FAILED]
[root@iZ23lttzrggZ lmmbao]#

[root@iZ23lttzrggZ lmmbao]# vi /etc/httpd/conf.d/subversion.conf

DELETE this follows:

PerlLoadModule Apache::Redmine
<Location /svn>
        DAV svn
        SVNParentPath "/opt/repositories/svn"
        SVNListParentPath on
        Order deny,allow
        Deny from all
        Satisfy any
        LimitXMLRequestBody 0
        SVNPathAuthz off
        PerlAccessHandler Apache::Authn::Redmine::access_handler
        PerlAuthenHandler Apache::Authn::Redmine::authen_handler
        AuthType Basic
        AuthName "Subversion Repository"
        Require valid-user
        RedmineDSN "DBI:mysql:database=redmine_db;host=localhost:3306"
        RedmineDbUser "redmine_admin"
        RedmineDbPass "**********"
</Location>

And then restart the httpd service

[root@iZ23lttzrggZ lmmbao]# service httpd restart