error Loading the Applications in the browser.

error Loading the Applications in the browser.

  
Hello guys am new to this platform and I have a problem on my first hello world application .
When I click the application to the browser the following message "There was an error processing your request. Please try again later ... "

Can someone help me ?
Most of the time I see this there is an error in the URL you entered.  Easiest test is right after publishing, click the blue arrow at the top center of service studio.  If there's no blue arrow after publishing you don't have a web screen contained within a web flow.  If the screen appears you probably just mistyped your first attempt.  Bookmark it if it works as the personal edition URLs can get long.