Hello Plesk Team,
im running in the same problem, after updating to Onyx.
We cant add a subdomain, we cant run /usr/local/psa/admin/bin/httpdmng --reconfigure-all (same error, see above)
Debian 17.0.17 debian8.0.build1700161028.14 / Fail2Ban is installed but we dont use it, not using the...