Changing the URL of my site isn't working?

okay so i was changing the URL of my site (yourenergysaver.com) to a new place (energymoneysaver.com/blog) using https://codex.www.ads-software.com/Changing_The_Site_URL#Moving_Sites
^^ that. When i go to energymoneysaver/blog, it says “The page cannot be displayed because an internal server error has occurred.” but it shows up if you go to the original site ( kind of..it messed up when i started changing the url.) But if you click on any links in the site, it would go to energymoneysaver.com/blog/blahblah. On phpmyadmin, both the siteurl and the home tables say energymoneysaver.com/blog …can anyone suggest what went wrong and how i can fix it?