Try to use PCI Compliance resolver utility returns help output instead of configuring a service:
# /usr/local/psa/admin/bin/pci_compliance_resolver --enable apache
Usage: pci_compliance_resolver [--enable|--disable]
panel Applying patches for sw-cp-server.
apache Applying patches for apache server.
courier Applying patches for courier-imap.
dovecot Applying patches for dovecot.
qmail Applying patches for qmail MTA.
proftpd Applying patches for proftpd.
all Applying patches for all installed services described above.
Bug #PPPM-3631 . It is fixed in Plesk Onyx.
Upgrade to the latest Plesk version .
If upgrade is not possible, replace the file
/usr/local/psa/admin/bin/ directory with a copy from attachment .
pci_compliance_resolver can be run with '--enable' option for all services:
# /usr/local/psa/admin/bin/pci_compliance_resolver --enable all