Aman on "[Plugin: Ultimate Wordpress Auction Plugin] Upon Activating I get 500 internal server error"

Hi Nitesh
Thanks for giving us such a beautiful plugin. But I am having problem with this. When I go to activate plugin it cause internal server error problem. I am using godaddy server. The domain is here http://1oction.com/. Go there and click auction page. Then you will seee the error. I have used shortcode to that page. Please let me know what to do. If this works well I want to buy premium feature of this plugin.

https://wordpress.org/plugins/ultimate-auction/