Generated code with jaxb 2.0 artifacts - Directory name is invalid - SoapUI

Hello,

I'm new in soapUI. I want to import a project from .wsdl file into springboot. So i imported the wsdl file and generated code with jaxb 2.0 artifacts. The problem is that i don't know which directory i have to put as output. I created one but the following error comes out:

Can you help me to resolve please?