When httpd is started by apachectl start command, LLAWP doesn't start completely.
The below error was output in Apache error_log.
[Error] SiteMinder Agent
Unable to load SiteMinder host configuration object or host configuration file.
/{home_web_agent}/config/SmHost.conf
Component: Web Agent for Apache (SMAPC)
Release: All supported releases (12.52.xx.xx and 12.8 Web Agent releases)
SELinux caused this issue as indicated by the below message in the error_log:
[notice] SELinux policy enabled; httpd running as context unconfined_u:system_r:httpd_t:s0
Change SELinux status from "enforcing" to "disabled" to resolve this issue.
Reference: Redhat: SECURITY-ENHANCED LINUX