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Caused by: java.awt.AWTError: Assistive Technology not found: org.GNOME.Accessibility.AtkWrapper
	at java.awt.Toolkit.loadAssistiveTechnologies(Toolkit.java:807)
	at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:886)
	at sun.swing.SwingUtilities2.getSystemMnemonicKeyMask(SwingUtilities2.java:2032)
	at javax.swing.plaf.basic.BasicLookAndFeel.initComponentDefaults(BasicLookAndFeel.java:1158)
	at javax.swing.plaf.metal.MetalLookAndFeel.initComponentDefaults(MetalLookAndFeel.java:431)
	at javax.swing.plaf.basic.BasicLookAndFeel.getDefaults(BasicLookAndFeel.java:148)
	at javax.swing.plaf.metal.MetalLookAndFeel.getDefaults(MetalLookAndFeel.java:1577)
	at javax.swing.UIManager.setLookAndFeel(UIManager.java:539)
	at javax.swing.UIManager.setLookAndFeel(UIManager.java:579)
	at javax.swing.UIManager.initializeDefaultLAF(UIManager.java:1349)
	at javax.swing.UIManager.initialize(UIManager.java:1459)
	at javax.swing.UIManager.maybeInitialize(UIManager.java:1426)
	at javax.swing.UIManager.getDefaults(UIManager.java:659)
	at javax.swing.UIManager.getColor(UIManager.java:701)
	at org.jfree.chart.JFreeChart.<clinit>(JFreeChart.java:261)
	at org.jfree.chart.ChartFactory.createXYLineChart(ChartFactory.java:1748)

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