SSLSessionCache shmcb session cache not supported:
By default, the module mod_socache_shmcb is not enabled in apache 2.4. Whereas, in Apache 2.2, the line is uncommented in apache/conf/httpd.
In order to fix this error message, we uncomment the above line in apache/conf/httpd. conf, by simply removing the # sign before it.
More information >> https://ibmimedia.com/blog/149/how-to-fix-sslsessioncache-shmcb-session-cache-not-supported
ah01873: init: session cache is not configured [hint: sslsessioncache]
invalid command 'sslmutex'
sslsessioncache shm session cache not supported known names
init: session cache is not configured (hint: sslsessioncache linux)
mod_socache_shmcb so not found
httpd socache_shmcb_module
init: session cache is not configured (hint: sslsessioncache wamp)
cache type shmcb