Apache fails to restart on plesk server on CentOS 6.5

# service httpd restart
Stopping httpd:                                            [FAILED]
Starting httpd: Syntax error on line 55 of /etc/httpd/conf/plesk.conf.d/ip_defalt/domain.com.conf:
SSLCertificateFile: file '/usr/local/psa/var/certificates/cert-6xg952' does notexist or is empty

Solution:

# /usr/local/psa/admin/sbin/httpdmng --reconfigure-all

# service httpd restart