First, I would like to thank the community here... your answers and tutorial has really helped me in the past year. Maybe someday i would be able to pay the favor back. A heartfelt Thank you.
I have this weird problem...
I found a solution that works for me, May be it will help somebody someday.
i went to my first server 192.168.1.10 and made sure each of the modules are enable below:
sudo a2enmod proxy
sudo a2enmod proxyhttp