haproxy.cfg:72]: 'option httpchk' : hiding headers or body at the end of the version string is deprecated. Please, consider to use 'http-check send' directive instead.

[remkolems]

pfSense version:
2.5.1-RELEASE (amd64)
built on Mon Apr 12 07:50:14 EDT 2021
FreeBSD 12.2-STABLE

HAProxy version:
haproxy-devel 0.62_3

Issue/bug
'option httpchk' : hiding headers or body at the end of the version string is deprecated. Please, consider to use 'http-check send' directive instead.

Additional information
'Services' menu -> menu item 'HAProxy' -> tab 'Backend' -> (config of specific backend) -> section 'Health checking' -> Http check method and subsequent related options are not available within the GUI whereas installed version (2.2.6-3709bd4) supports it.

Related bugtracker pfSense team:
https://redmine.pfsense.org/issues/11491
https://redmine.pfsense.org/issues/10739