JVM info: Ubuntu - 11.0.16 - 11.0.16+8-post-Ubuntu-0ubuntu122.04

java.net.preferIPv4Stack=true

Found java version 11.0.16

Exception in thread "main" 

java.awt.HeadlessException: 

No X11 DISPLAY variable was set, but this program performed an operation which requires it.

        at java.desktop/java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:208)

        at java.desktop/java.awt.Window.<init>(Window.java:548)

        at java.desktop/java.awt.Frame.<init>(Frame.java:423)

        at java.desktop/java.awt.Frame.<init>(Frame.java:388)

        at java.desktop/javax.swing.SwingUtilities$SharedOwnerFrame.<init>(SwingUtilities.java:1919)

        at java.desktop/javax.swing.SwingUtilities.getSharedOwnerFrame(SwingUtilities.java:1995)

        at java.desktop/javax.swing.JOptionPane.getRootFrame(JOptionPane.java:1689)

        at java.desktop/javax.swing.JOptionPane.showOptionDialog(JOptionPane.java:868)

        at java.desktop/javax.swing.JOptionPane.showMessageDialog(JOptionPane.java:670)

        at java.desktop/javax.swing.JOptionPane.showMessageDialog(JOptionPane.java:641)

        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:177)

        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:147)




실행하니까 자꾸 이렇게 뜨는데 뭐가 잘못된거임?


이러다가 계속 원래대로 돌아옴 서버는 안돌아가고 


일단 모드 서버 열려고 포지 jar 통째로 넣었는데... 이렇게 하는거 아닌가