Por favor su ayuda con este error, pues quiero poner un certificado ssl
jul 14 22:15:42 xxxxx.com systemd[1]: Starting The Apache HTTP Server...
jul 14 22:15:43 xxxxx .com systemd[1]: httpd.service: main process exited, code=exited, status=1/FAILURE
jul 14 22:15:43 xxxxx.com kill[8827]: kill: cannot find process ""
jul 14 22:15:43 xxxxx.com systemd[1]: httpd.service: control process exited, code=exited status=1
jul 14 22:15:43 xxxxx.com systemd[1]: Failed to start The Apache HTTP Server.
jul 14 22:15:43 xxxxx.com systemd[1]: Unit httpd.service entered failed state.
jul 14 22:15:43 xxxxx.com systemd[1]: httpd.service failed.