When I try to make a Form Wizard Pro by Source Tree Solutions, this message come up.

We're sorry but a server error has occurred while trying to process your request.
The error has been logged and will be reviewed by our staff as soon as possible. It is possible that the error was just a momentary hiccup and you may wish to use the back button and try again or go back to the home page.
 

Can you help me with that.
 

 I should have checked that first.

Thank you for you help.