[dancer-users] form submition not working

Hi, I have a template with a form in it. the action is a url ( /user/display ). I also have a route handler /user/display But when I submit the form, the url on the website change to /user/display , but the browser cannot display it. 'This webpage is not available'. The log file says looking for /user/display/index But when I reload the page, it works as expected. Any ideas why when first time to load the page, it doesn't work, there is /user/display route, why it is looking for /user/display/index which doesn't exist? Many thanks, Dan