从apache 2.2升级到2.4后，运行apachectl configtest时出现以下错误
Syntax error on line 36 of /etc/httpd/conf.d/mod_security.conf:
Unsupported HTTP response code 509
Line 36 of my /etc/httpd/conf.d/mod_security.conf:
ErrorDocument 509 "The page you are requesting cannot be served."
任何想法如何解决这个问题。