java.lang.NullPointerException

Required nonnull default for apps.gui.GuiLafPreferencesManager does not exist.

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  • via GitHub by geowar1
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  • via GitHub by bobjacobsen
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  • Stack trace

    • java.lang.NullPointerException: Required nonnull default for apps.gui.GuiLafPreferencesManager does not exist. at java.util.Objects.requireNonNull(Objects.java:228) at jmri.InstanceManager.getDefault(InstanceManager.java:182) at jmri.jmrit.display.layoutEditor.LayoutEditor.<init>(LayoutEditor.java:169)

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