PHP 5.6.24 Adjust recommendation
Once PHP 5.6.24 is installed via the Web Platform Installer, when you go to PHP Manager within the web server and change the config errorlog to the special value "syslog"....the recommendation screen pops up saying The PHP directive "errorlog" is using a non-existent directory.
Can you account for the special value syslog?
Lex Li commented
This also should be tracked under PHP Manager, https://github.com/phpmanager/phpmanager/issues/24