today I was in the process of setting up my personal CA with ISPConfig and in this process stumbled upon a typo on line 103 in server/plugins-available/apache2_plugin.inc.php
if ($web_config['CA_path']!='' && !file_exists($web_config['CA_path'].'/openssl.cnf'))
$app->log("CA path error, file does not exist:".$web_config['CA_path'].'/openssl.conf',LOGLEVEL_ERROR);
This snippet checks for the existance of openssl.cnf but prints an error message about openssl.conf.