After i Installed the mod_perl, Apache can't start.

Hi,

I installed the management server on Centos6 and agent on Windows10.
I have a problem that Agent can not send a their information. so I installed the mod_perl on Centos6. After  i Installed the mod_perl, Apache can't start. Could someone guide me through this?

○The following is erro_log:
Mon Jul 31 15:08:31 2017] [error] Can't locate object method "httpd_conf" via package "Apache" at /usr/local/share/perl5/Apache/Ocsinventory/Plugins.pm line 33.\nCompilation failed in require at (eval 100) line 3.\n
[Mon Jul 31 15:08:31 2017] [error] Can't load Perl module Apache::Ocsinventory::Plugins for server localhost.localdomain:0, exiting...

○The following is Plugins.pm line33.:
#Loading plugins modules
     32         if($ENV{'OCS_MODPERL_VERSION'} == 1){
     33         Apache->httpd_conf("Include $ENV{OCS_PLUGINS_CONF_DIR}");