Addon into jar not found resources

Hello we need create a addon with custom styles to add as module on our project, but always return frontend/styles/mn-toolbar.css or frontend/styles/mn-styles.html, not found.

We import this files with this code:

@HtmlImport("frontend://styles/mn-styles.html")
@StyleSheet("frontend://styles/mn-toolbar.css")

Parent project it’s a maven jar project and the addon it’s another jar project, included through maven dependency.

In the image can see all structures and navigator 404 error.

![image]
(https://vaadin.com/attachment/9be83301-dc7d-4dab-a756-58c3debaca99/Captura.PNG)

17669396.png

Here I leave links both to the addon and to a project where I want to use it: