If you ever need to verify your Apache version, all you have to do is to log in to your server using ssh then use one of the following protocol. It will also work with the Terminal that comes with macOS.
# httpd -V
/var/www/vhosts/example.com/httpdocs$ httpd -V
Server version: Apache/2.2.15 (Unix)
Server built: May 13 2013 22:11:16
Server’s Module Magic Number: 20051115:25
Server loaded: APR 1.3.9, APR-Util 1.3.9
Compiled using: APR 1.3.9, APR-Util 1.3.9
Server MPM: Prefork
forked: yes (variable process count)
Server compiled with….
-D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)