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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Required nonnull default for apps.gui.GuiLafPreferencesManager does not exist.
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field value must not be null
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Required nonnull default for jmri.ConsistManager does not exist.
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, 10 months ago
Entries must not be null!
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.(LayoutEditor.java:169)

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