LetsPlaySimi

I want to install forge Minecraft 1.12.2 on Linux/Ubuntu/Pop_OS And I get the following error: home@pop-os:~/Downloads$ java -jar forge-1.12.2-14.23.5.2860-installer.jar JVM info: Private Build - 19.0.1 - 19.0.1+10-Ubuntu-1ubuntu122.04 java.net.preferIPv4Stack=true Found java version 19.0.1 Exception in thread "main" java.awt.HeadlessException: No X11 DISPLAY variable was set, or no headful library support was found, but this program performed an operation which requires it, at java.desktop/java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:166) at java.desktop/java.awt.Window.<init>(Window.java:553) at java.desktop/java.awt.Frame.<init>(Frame.java:428) at java.desktop/java.awt.Frame.<init>(Frame.java:393) 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:1696) at java.desktop/javax.swing.JOptionPane.showOptionDialog(JOptionPane.java:875) at java.desktop/javax.swing.JOptionPane.showMessageDialog(JOptionPane.java:677) at java.desktop/javax.swing.JOptionPane.showMessageDialog(JOptionPane.java:648) at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:177) at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:147) Same thing happens with 1.18.2 (haven't tried any other versions but I think they're broken too) Hope someone can help me!