You need to make entry in your
/etc/hosts file for domain pointing to your ip.
127.0.0.1 helloworld.com www.helloworld.com
I must add this question to
faq as many users having same trouble.
i did but still its not opening.
opening like with port or without port ( http://helloworld.com:22222 ).
yes i have added that already.
actually sorry i did some nginx locate config, for that reason everything went wrong. again i installed the nginx stack. and it works fine.
Glad to know query is resolved. I am closing this support topic for now.
Feel free to create a new support topic if you have any queries further.