11 Nov 15:07:11 ERROR [geoserver.ows] -
java.lang.InternalError: Can't connect to X11 window server using ':0.0' as the value of the DISPLAY variable.
        at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
        at sun.awt.X11GraphicsEnvironment.access$100(X11GraphicsEnvironment.java:62)
        at sun.awt.X11GraphicsEnvironment$1.run(X11GraphicsEnvironment.java:166)
        at java.security.AccessController.doPrivileged(Native Method)
        at sun.awt.X11GraphicsEnvironment.<clinit>(X11GraphicsEnvironment.java:142)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:186)
        at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:82)
        at java.awt.image.BufferedImage.createGraphics(BufferedImage.java:1152)
        at org.vfny.geoserver.wms.responses.ImageUtils.prepareTransparency(ImageUtils.java:137)
        at org.vfny.geoserver.wms.responses.DefaultRasterMapProducer.produceMap(DefaultRasterMapProducer.java:252)
        at org.vfny.geoserver.wms.responses.map.metatile.MetatileMapProducer.produceMap(MetatileMapProducer.java:122)
        at org.vfny.geoserver.wms.responses.GetMapResponse.execute(GetMapResponse.java:444)
        at org.geoserver.ows.adapters.ResponseAdapter.getMimeType(ResponseAdapter.java:48)
        at org.geoserver.ows.Dispatcher.response(Dispatcher.java:712)
        at org.geoserver.ows.Dispatcher.handleRequestInternal(Dispatcher.java:234)
        at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153)
        at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
        at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:875)
        at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:809)
        at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571)
        at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:501)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)