headless log 12032016

2016-12-03 19:18:45,135 [INFO] Running in headless mode
2016-12-03 19:18:45,237 [DEBUG] Executing: [uname, -a]
2016-12-03 19:18:45,248 [DEBUG] Executing: [gconftool-2, --get, /desktop/gnome/shell/windows/theme]
2016-12-03 19:18:45,278 [DEBUG] Executing: [grep, dark_bg_color, /usr/share/themes/Ambiance/gtk-3.0/gtk.css]
2016-12-03 19:18:45,285 [DEBUG] Executing: [grep, dark_bg_color, /usr/share/themes/Ambiance/gtk-3.0/gtk-main.css]
2016-12-03 19:18:45,313 [INFO] Main properties file /opt/qz-tray/qz-tray.properties
2016-12-03 19:18:45,315 [DEBUG] Executing: [certutil, -d, sql:/home/lite/.pki/nssdb, -A, -t, TC, -n, QZ Industries, LLC, -i, /opt/qz-tray/auth/qz-tray.crt]
2016-12-03 19:18:45,648 [ERROR] Could not start tray manager
java.lang.reflect.InvocationTargetException
	at java.awt.EventQueue.invokeAndWait(EventQueue.java:1321)
	at java.awt.EventQueue.invokeAndWait(EventQueue.java:1296)
	at javax.swing.SwingUtilities.invokeAndWait(SwingUtilities.java:1348)
	at qz.ws.PrintSocketServer.main(Unknown Source)
Caused by: java.awt.HeadlessException: 
No X11 DISPLAY variable was set, but this program performed an operation which requires it.
	at java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:204)
	at java.awt.Window.<init>(Window.java:536)
	at java.awt.Frame.<init>(Frame.java:420)
	at java.awt.Frame.<init>(Frame.java:385)
	at javax.swing.SwingUtilities$SharedOwnerFrame.<init>(SwingUtilities.java:1758)
	at javax.swing.SwingUtilities.getSharedOwnerFrame(SwingUtilities.java:1833)
	at javax.swing.JDialog.<init>(JDialog.java:272)
	at qz.ui.GatewayDialog.<init>(Unknown Source)
	at qz.common.TrayManager.<init>(Unknown Source)
	at qz.ws.PrintSocketServer.lambda$main$0(Unknown Source)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:301)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
	at java.awt.EventQueue.access$500(EventQueue.java:97)
	at java.awt.EventQueue$3.run(EventQueue.java:709)
	at java.awt.EventQueue$3.run(EventQueue.java:703)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
2016-12-03 19:18:45,678 [WARN] The web socket server is no longer running