Mobile Dropdown Menu Displays 404 Error

Hello,
This problem just recently started occuring
and I don’t know how it started. Every time
I view my site on my i-phone, I click the mobile
drop down menu to navigate to another page
and the button does not bring up the menu at all,
it only sends me to a 404 error page. The menu
used to work fine and I tried playing with the menu
options and it still does not work. All of the links
work on my desktop version of the site, so I believe
that it has something specifically to do with this button.

http://www.camdraws.com