Gradle and IntelliJ IDEA on Windows give java.awt.HeadlessException - but why?

Question

Android

To build an Android project through Gradle, you need the ability to enter a password to sign the project at the time of build.
I found this solution:
https://www.timroes.de/2014/01/19/using-password-p...
And the command line works fine!
When trying to make a production build through IntelliJ IDEA, I get a cool error:

Error:(29, 0) Gradle: Failed to create component for 'dialog' reason: java.awt.HeadlessException
> java.awt.HeadlessException (no error message)

Does anyone have any ideas why this is happening?
JDK and JRE cost the latest versions, similar to IntelliJ IDEA itself.