New Vaadin 14 app fails to run, error “Failed to determine 'node' tool.” Missing Node.js and npm tools

Question

I used the Get Started page to create a new Vaadin 14 app, after choosing the Plain Java Servlet option.

The web page successfully downloaded a .zip<

Answer 1

This problem appeared when I was testing new Vaadin 14. I followed instructions, installed node, but I was doing that with previously opened Idea with another project (other to the this). The problem went away only when I restarted Idea.