Menu link not working

Hi there, I just discovered that one of the menu links in my navigation isn’t redirecting. I’m not sure what the issue is here, as my other page navigations work just fine, but when I click the “Portfolio” tab on meganzahneis.com, nothing happens. Same result for clicking any of the child pages within the menu dropdown. I tried deleting and re-adding the pages to my primary navigation with no luck. Any ideas as to why this might be are much appreciated.