java.lang.NullPointerException at org.netbeans.lib.profiler.ui.charts.SynchronousXYChart.getLeftVerticalAxisLegendWidth(SynchronousXYChart.java:1404) at org.netbeans.lib.profiler.ui.charts.SynchronousXYChart.checkLeftChartMargin(SynchronousXYChart.java:1506) at org.netbeans.lib.profiler.ui.charts.SynchronousXYChart.checkChartMargins(SynchronousXYChart.java:1500) at org.netbeans.lib.profiler.ui.charts.SynchronousXYChart.chartDataChanged(SynchronousXYChart.java:935) at org.netbeans.lib.profiler.ui.charts.AbstractSynchronousXYChartModel.fireChartDataChanged(AbstractSynchronousXYChartModel.java:141) at org.netbeans.lib.profiler.ui.monitor.VMTelemetryXYChartModel.dataChanged(VMTelemetryXYChartModel.java:165) at org.netbeans.lib.profiler.results.DataManager$1.run(DataManager.java:106) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907) at java.lang.Thread.run(Thread.java:619)