Unable to find AppWidgetset.gwt.xml

i 've just created a vaadin maven project using arquetype like in the tutorial.
I just modifed the build section of POM in order to use the wildfly server instead of the jetty.

[code]

        <plugin>

            <groupId>org.wildfly.plugins</groupId>

            <artifactId>wildfly-maven-plugin</artifactId>

            <version>1.1.0.Alpha11</version>

        </plugin>

[/code]But when i try Maven/install i have the next error

   [ERROR]
 Unable to find 'AppWidgetset.gwt.xml' on your classpath; could be a typo, or maybe you forgot to include a classpath entry for source?

What does it happen?

It’s strange but now if i use Run configuration… with the goals

wildfly:deploy it runs correctly