Personalization - Incorrect log-in takes the user to "page not found"

1. Run GO Green site URL
2. In home page click on "log-in" button in the header
3. Enter a invalid user-name or password

Expected - "Incorrect user name or password" error should be shown in the same page.
Actual - "Incorrect user name or password" error is shown and user is take to "Page not found"

The issue is same regardless of the page from where you are attempting to "log-in"