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java.lang.NullPointerException: 	at jmri.InstanceManager.setDefault(InstanceManager.java:235)	at jmri.managers.ManagerDefaultSelector.configure(ManagerDefaultSelector.java:159)	at jmri.managers.ManagerDefaultSelector.initialize(ManagerDefaultSelector.java:214)	at jmri.implementation.JmriConfigurationManager.initializeProvider(JmriConfigurationManager.java:249)	at jmri.implementation.JmriConfigurationManager.lambda$initializeProvider$119(JmriConfigurationManager.java:245)