Roo project creates uncompilable code

This Roo script

project setup --topLevelPackage topdomain --projectName "Tester" --java 8 --multimodule STANDARD
web mvc setup
web mvc view setup --type THYMELEAF
web mvc templates setup --type THYMELEAF 

 creates an error "Type mismatch: cannot convert from Class<ConcurrencyException> to Class<? extends Throwable>[]" in the method:

@ExceptionHandler(ConcurrencyException.class)
    public ModelAndView concurrencyException(final ConcurrencyException ex) {
        return ex.populateAndGetFormView();
    }

of the topdomain.application.web.advices.ConcurrencyExceptionManager class.

ConcurrencyException being part of io.springlets.web.mvc.util.concurrency.

As this was my first entry into using Roo 2 it's not obvious how to fix it. At any rate created code should compile and if there insufficient data Roo should refuse to go forward.