@vendland,
The samples from our website have been built using Eclipse and we suggest you to run it in Tomcat server(<=v9) within Eclipse. However, if you want to run it in IntelliJ IDEA, you will have to configure Tomcat server(<=v9) within IntelliJ IDEA. Please refer to this article for a tutorial on the same.
—
Thangaraj Raman
Team CanvasJS
