First, I’m glad to see this beautiful addon. Thanks for your hardwork.
One thing I notice is, the JAR file included in my final target (WAR) can be different.
(1) invient-charts-0.8.6.jar is the one when I build by Maven.
(2) invientcharts-0.8.6.jar is included in invientcharts-0.8.6.zip that I could download and unzip to get a jar.
May not be a big deal, but you should correct this.
You probably should notify the author of the component (Invient) about this in a more direct fashion. The component’s official thread seems to be
https://vaadin.com/forum/-/message_boards/view_message/337100 . Maybe they will note it from there easier.