java.lang.InternalError

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    • java.lang.InternalError: Can't connect to X11 window server using ':2' as the value of the DISPLAY variable. at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method) at sun.awt.X11GraphicsEnvironment.access$100(X11GraphicsEnvironment.java:52) at sun.awt.X11GraphicsEnvironment$1.run(X11GraphicsEnvironment.java:155) at java.security.AccessController.doPrivileged(Native Method) at sun.awt.X11GraphicsEnvironment.<clinit>(X11GraphicsEnvironment.java:131) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:169) at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:68) at sun.awt.X11.XToolkit.<clinit>(XToolkit.java:89) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:169) at java.awt.Toolkit$2.run(Toolkit.java:834) at java.security.AccessController.doPrivileged(Native Method) at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:826) at com.jgoodies.looks.LookUtils.isLowResolution(LookUtils.java:484) at com.jgoodies.looks.LookUtils.<clinit>(LookUtils.java:249) at com.jgoodies.looks.plastic.PlasticLookAndFeel.<clinit>(PlasticLookAndFeel.java:135) at oracle.sysman.assistants.rcu.ui.InteractiveRCUModel.<init>(InteractiveRCUModel.java:117) at oracle.sysman.assistants.rcu.Rcu.execute(Rcu.java:307) at oracle.sysman.assistants.rcu.Rcu.main(Rcu.java:363)

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