MSC000001: Failed to start service org.wildfly.security.key-manager.KeyManagerName caused by NullPointerException

Issue

• While converting from legacy security to elytron, we encountered the following:

ERROR [org.jboss.msc.service.fail] (MSC service thread 1-1) MSC000001: Failed to start service org.wildfly.security.key-manager."KeyManagerName": org.jboss.msc.service.StartException in service org.wildfly.security.key-manager."KeyManagerName": java.lang.NullPointerException
        at org.wildfly.extension.elytron@15.0.36.Final-redhat-00001//org.wildfly.extension.elytron.SSLDefinitions$1.lambda$getValueSupplier$0(SSLDefinitions.java:592)
        at org.wildfly.extension.elytron@15.0.36.Final-redhat-00001//org.wildfly.extension.elytron.TrivialService.start(TrivialService.java:61)
        at org.jboss.msc@1.4.13.Final-redhat-00001//org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1739)
        at org.jboss.msc@1.4.13.Final-redhat-00001//org.jboss.msc.service.ServiceControllerImpl$StartTask.execute(ServiceControllerImpl.java:1701)
        at org.jboss.msc@1.4.13.Final-redhat-00001//org.jboss.msc.service.ServiceControllerImpl$ControllerTask.run(ServiceControllerImpl.java:1559)
        at org.jboss.threads@2.4.0.Final-redhat-00001//org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
        at org.jboss.threads@2.4.0.Final-redhat-00001//org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1990)
        at org.jboss.threads@2.4.0.Final-redhat-00001//org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1486)
        at org.jboss.threads@2.4.0.Final-redhat-00001//org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1363)
        at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.lang.NullPointerException
        at org.wildfly.extension.elytron@15.0.36.Final-redhat-00001//org.wildfly.extension.elytron.SSLDefinitions$1.lambda$getValueSupplier$0(SSLDefinitions.java:578)
        ... 9 more