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java.lang.NullPointerException: 	at org.codehaus.plexus.component.configurator.converters.lookup.DefaultConverterLookup.findConverterForType(DefaultConverterLookup.java:115)	at org.codehaus.plexus.component.configurator.converters.lookup.DefaultConverterLookup.lookupConverterForType(DefaultConverterLookup.java:92)	at org.codehaus.plexus.component.configurator.converters.composite.CollectionConverter.fromConfiguration(CollectionConverter.java:175)	at org.codehaus.plexus.component.configurator.converters.ComponentValueSetter.configure(ComponentValueSetter.java:247)	at org.codehaus.plexus.component.configurator.converters.composite.ObjectWithFieldsConverter.processConfiguration(ObjectWithFieldsConverter.java:137)	at org.codehaus.plexus.component.configurator.BasicComponentConfigurator.configureComponent(BasicComponentConfigurator.java:56)	at org.codehaus.plexus.component.configurator.AbstractComponentConfigurator.configureComponent(AbstractComponentConfigurator.java:54)	at org.codehaus.plexus.component.configurator.AbstractComponentConfigurator.configureComponent(AbstractComponentConfigurator.java:47)	at org.codehaus.plexus.personality.plexus.lifecycle.phase.AutoConfigurePhase.execute(AutoConfigurePhase.java:39)	at org.codehaus.plexus.lifecycle.AbstractLifecycleHandler.start(AbstractLifecycleHandler.java:101)	at org.codehaus.plexus.component.manager.AbstractComponentManager.startComponentLifecycle(AbstractComponentManager.java:105)	at org.codehaus.plexus.component.manager.AbstractComponentManager.createComponentInstance(AbstractComponentManager.java:95)	at org.codehaus.plexus.component.manager.ClassicSingletonComponentManager.getComponent(ClassicSingletonComponentManager.java:92)	at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:331)	at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:440)	at org.apache.maven.execution.MavenSession.lookup(MavenSession.java:138)	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.findMappingsForLifecycle(DefaultLifecycleExecutor.java:1322)	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.bindLifecycleForPackaging(DefaultLifecycleExecutor.java:1255)	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.constructLifecycleMappings(DefaultLifecycleExecutor.java:1238)	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:518)	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:371)	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:332)	at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:181)	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:356)	at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:137)	at org.apache.maven.cli.MavenCli.main(MavenCli.java:356)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)	at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)	at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)	at org.codehaus.classworlds.Launcher.main(Launcher.java:375)