I am trying to create vaadin 6 maven project using the following cmd : mvn archetype:generate -DarchetypeGroupId=com.vaadin -DarchetypeArtifactId=vaadin-archetype-application -DarchetypeVersion=6.8.11 -Darchetype.properties=generate.properties -DgroupId=com.example.cem -DartifactId=test
But it fails with : Failed to execute goal org.apache.maven.plugins:maven-archetype-plugin:3.0.1:generate (default-cli) on project cem: The defined artifact is not an archetype
when I try to change archetypeVersion to 7.6.4 a vaadin project created correctly .
what is the wrong with vaadin 6 here?