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java.lang.NullPointerException at javax.swing.text.html.CSS$FontSize.getValue(Unknown Source) at javax.swing.text.html.CSS$FontSize.toStyleConstants(Unknown Source) at javax.swing.text.html.StyleSheet$ViewAttributeSet.getAttribute(Unknown Source) at javax.swing.text.StyleConstants.getFontSize(Unknown Source) at javax.swing.text.html.CSS$FontSize.getValue(Unknown Source) at javax.swing.text.html.CSS$FontSize.toStyleConstants(Unknown Source) at javax.swing.text.html.StyleSheet$ViewAttributeSet.getAttribute(Unknown Source) at javax.swing.text.StyleConstants.getFontSize(Unknown Source) at javax.swing.text.html.CSS$FontSize.getValue(Unknown Source) at javax.swing.text.html.CSS.getFontSize(Unknown Source) at javax.swing.text.html.CSS.getFont(Unknown Source) at javax.swing.text.html.StyleSheet.getFont(Unknown Source) at javax.swing.text.DefaultStyledDocument.getFont(Unknown Source) at javax.swing.text.LabelView.setPropertiesFromAttributes(Unknown Source) at javax.swing.text.html.InlineView.setPropertiesFromAttributes(Unknown Source) at javax.swing.text.LabelView.sync(Unknown Source) at javax.swing.text.LabelView.getFont(Unknown Source) at javax.swing.text.GlyphPainter1.sync(Unknown Source) at javax.swing.text.GlyphPainter1.getSpan(Unknown Source) at javax.swing.text.GlyphView.getPreferredSpan(Unknown Source) at javax.swing.text.FlowView$LogicalView.getPreferredSpan(Unknown Source) at javax.swing.text.FlowView.calculateMinorAxisRequirements(Unknown Source) at javax.swing.text.html.ParagraphView.calculateMinorAxisRequirements(Unknown Source) at javax.swing.text.BoxView.checkRequests(Unknown Source) at javax.swing.text.BoxView.getMinimumSpan(Unknown Source) at javax.swing.text.html.ParagraphView.getMinimumSpan(Unknown Source) at javax.swing.text.BoxView.calculateMinorAxisRequirements(Unknown Source) at javax.swing.text.html.BlockView.calculateMinorAxisRequirements(Unknown Source) at javax.swing.text.BoxView.checkRequests(Unknown Source) at javax.swing.text.BoxView.getMinimumSpan(Unknown Source) at javax.swing.text.html.BlockView.getMinimumSpan(Unknown Source) at javax.swing.text.BoxView.calculateMinorAxisRequirements(Unknown Source) at javax.swing.text.html.BlockView.calculateMinorAxisRequirements(Unknown Source) at javax.swing.text.BoxView.checkRequests(Unknown Source) at javax.swing.text.BoxView.setSpanOnAxis(Unknown Source) at javax.swing.text.BoxView.layout(Unknown Source) at javax.swing.text.BoxView.setSize(Unknown Source) at javax.swing.plaf.basic.BasicTextUI$RootView.setSize(Unknown Source) at javax.swing.plaf.basic.BasicTextUI.modelToView(Unknown Source) at javax.swing.text.DefaultCaret.repaintNewCaret(Unknown Source) at javax.swing.text.DefaultCaret$1.run(Unknown Source) at java.awt.event.InvocationEvent.dispatch(Unknown Source) at java.awt.EventQueue.dispatchEvent(Unknown Source) at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.run(Unknown Source)