java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at com.decodon.awt.JMultiScrollPane.getViewComponents(SourceFile:387)
at com.decodon.project.ui.roi.ROIMultiScrollPane.getROIs(SourceFile:77)
at com.decodon.project.ui.roi.ROIMultiScrollPane.revalidate(SourceFile:166)
at javax.swing.JComponent.setFont(Unknown Source)

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