Considerations and limitations for WebSphere Application Server Liberty Profile

When using Debug on server to test your application, a display issue might occur on the terminal window. You might receive the following error message:

ERROR HPS5018 An unexpected exception has occurred.
  Frame unable to display: java.awt.HeadlessException.

If this error occurs in the console, you can fix this problem by following these steps.

1. In the ZIETrans Projects view, open the Servers tab.
2. Right-click on the WebSphere Application Server Liberty Profile server listed and click on New > Server Environment File > jvm.options.
3. Add the value to the file:

   -Djava.awt.headless=false

4. Save and close the jvm.options file.
5. Restart the server to activate the changes.