java.lang.InternalError: Can't connect to X11 window server using '192.168.3.21:0.0' as the value of the DISPLAY variable.

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    • java.lang.InternalError: Can't connect to X11 window server using '192.168.3.21:0.0' as the value of the DISPLAY variable. at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method) at sun.awt.X11GraphicsEnvironment.<clinit>(X11GraphicsEnvironment.java:134) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:141) at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:62) at java.awt.Window.init(Window.java:231) at java.awt.Window.<init>(Window.java:275) at java.awt.Frame.<init>(Frame.java:401) at java.awt.Frame.<init>(Frame.java:366) at oracle.sysman.oii.oiic.OiicInstaller.main(OiicInstaller.java:593)

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