Bonjour!

depuis un certains temps, je tente d'installer open baraza sur linux et j'ai tout les problèmes. Lorsque je lance mon sh ide.sh je reçois le message d'erreur suivant:

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Exception in thread "main" java.lang.NoClassDefFoundError: Could not initialize class sun.awt.X11GraphicsEnvironment
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:186)
        at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:82)
        at sun.awt.X11.XToolkit.<clinit>(XToolkit.java:112)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:186)
        at java.awt.Toolkit$2.run(Toolkit.java:849)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:841)
        at sun.swing.SwingUtilities2$AATextInfo.getAATextInfo(SwingUtilities2.java:121)
        at javax.swing.plaf.metal.MetalLookAndFeel.initComponentDefaults(MetalLookAndFeel.java:1564)
        at javax.swing.plaf.basic.BasicLookAndFeel.getDefaults(BasicLookAndFeel.java:147)
        at javax.swing.plaf.metal.MetalLookAndFeel.getDefaults(MetalLookAndFeel.java:1599)
        at javax.swing.UIManager.setLookAndFeel(UIManager.java:530)
        at javax.swing.UIManager.setLookAndFeel(UIManager.java:570)
        at javax.swing.UIManager.initializeDefaultLAF(UIManager.java:1320)
        at javax.swing.UIManager.initialize(UIManager.java:1407)
        at javax.swing.UIManager.maybeInitialize(UIManager.java:1395)
        at javax.swing.UIManager.getUI(UIManager.java:991)
        at javax.swing.JPanel.updateUI(JPanel.java:126)
        at javax.swing.JPanel.<init>(JPanel.java:86)
        at javax.swing.JPanel.<init>(JPanel.java:109)
        at javax.swing.JPanel.<init>(JPanel.java:117)
        at javax.swing.JRootPane.createGlassPane(JRootPane.java:544)
        at javax.swing.JRootPane.<init>(JRootPane.java:364)
        at javax.swing.JApplet.createRootPane(JApplet.java:160)
        at javax.swing.JApplet.<init>(JApplet.java:148)
        at org.baraza.Baraza.<init>(Baraza.java:26)
        at org.baraza.Baraza.main(Baraza.java:56)
j'ai besoin de votre aide. que dois-je faire?
merci.