About plugin "Monitoring Service" 1.5.1

Hello,

i retrive broken images and pdf not working.

Openfire version

The error is: 4.0.2

HTTP ERROR 500

Problem accessing /plugins/monitoring/graph. Reason:

    Server Error

Caused by:

java.lang.NoClassDefFoundError: Could not initialize class sun.awt.X11FontManager

  at java.lang.Class.forName0(Native Method)

  at java.lang.Class.forName(Class.java:348)

  at sun.font.FontManagerFactory$1.run(FontManagerFactory.java:82)

  at java.security.AccessController.doPrivileged(Native Method)

  at sun.font.FontManagerFactory.getInstance(FontManagerFactory.java:74)

  at java.awt.Font.getFont2D(Font.java:491)

  at java.awt.Font.defaultLineMetrics(Font.java:2176)

  at java.awt.Font.getLineMetrics(Font.java:2246)

  at org.jfree.chart.axis.DateAxis.estimateMaximumTickLabelWidth(DateAxis.java:1345)

  at org.jfree.chart.axis.DateAxis.selectHorizontalAutoTickUnit(DateAxis.java:1257)

  at org.jfree.chart.axis.DateAxis.selectAutoTickUnit(DateAxis.java:1231)

  at org.jfree.chart.axis.DateAxis.refreshTicksHorizontal(DateAxis.java:1476)

  at org.jfree.chart.axis.DateAxis.refreshTicks(DateAxis.java:1448)

  at org.jfree.chart.axis.DateAxis.draw(DateAxis.java:1661)

  at org.jfree.chart.plot.XYPlot.drawAxes(XYPlot.java:2558)

  at org.jfree.chart.plot.XYPlot.draw(XYPlot.java:2100)

  at org.jfree.chart.JFreeChart.draw(JFreeChart.java:1039)

  at org.jfree.chart.JFreeChart.createBufferedImage(JFreeChart.java:1213)

  at org.jivesoftware.openfire.reporting.graph.GraphEngine.generateSparklinesGraph(G raphEngine.java:174)

  at org.jivesoftware.openfire.reporting.graph.GraphServlet.service(GraphServlet.jav a:125)

  at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)

  at org.jivesoftware.openfire.container.PluginServlet.handleServlet(PluginServlet.j ava:318)

  at org.jivesoftware.openfire.container.PluginServlet.service(PluginServlet.java:11 1)

  at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)

  at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:812)

  at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1669)

  at org.jivesoftware.admin.PluginFilter.doFilter(PluginFilter.java:80)

  at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1652)

  at org.jivesoftware.admin.AuthCheckFilter.doFilter(AuthCheckFilter.java:162)

  at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1652)

  at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:11 8)

  at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:52)

  at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1652)

  at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)

  at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)

  at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577)

  at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:22 3)

  at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:11 27)

  at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)

  at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185 )

  at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:106 1)

  at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)

  at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandler Collection.java:215)

  at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.jav a:110)

  at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)

  at org.eclipse.jetty.server.Server.handle(Server.java:499)

  at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:311)

  at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)

  at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:544)

  at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635 )

  at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)

  at java.lang.Thread.run(Thread.java:745)

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