java.lang.NullPointerException: null

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java.lang.NullPointerException: null
at java.beans.Introspector.getPublicDeclaredMethods(Introspector.java:1337)
at java.beans.Introspector.getTargetMethodInfo(Introspector.java:1197)
at java.beans.Introspector.getBeanInfo(Introspector.java:426)
at java.beans.Introspector.getBeanInfo(Introspector.java:173)
at java.beans.Introspector.getBeanInfo(Introspector.java:260)
at java.beans.Introspector.(Introspector.java:407)
at java.beans.Introspector.getBeanInfo(Introspector.java:173)
at groovy.lang.MetaClassImpl$15.run(MetaClassImpl.java:3290)
at groovy.lang.MetaClassImpl.addProperties(MetaClassImpl.java:3288)
at groovy.lang.MetaClassImpl.initialize(MetaClassImpl.java:3265)
at org.codehaus.groovy.reflection.ClassInfo.getMetaClassUnderLock(ClassInfo.java:254)
at org.codehaus.groovy.reflection.ClassInfo.getMetaClass(ClassInfo.java:285)
at org.codehaus.groovy.runtime.callsite.ClassMetaClassGetPropertySite.(ClassMetaClassGetPropertySite.java:38)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.createClassMetaClassGetPropertySite(AbstractCallSite.java:373)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.createGetPropertySite(AbstractCallSite.java:325)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.acceptGetProperty(AbstractCallSite.java:312)
at org.grails.plugins.databasemigration.DatabaseMigrationGrailsPlugin.configureLiquibase(DatabaseMigrationGrailsPlugin.groovy:96)
at org.grails.plugins.databasemigration.DatabaseMigrationGrailsPlugin.doWithSpring(DatabaseMigrationGrailsPlugin.groovy:55)
at org.grails.plugins.DefaultGrailsPlugin.doWithRuntimeConfiguration(DefaultGrailsPlugin.java:555)
at org.grails.plugins.AbstractGrailsPluginManager.doRuntimeConfiguration(AbstractGrailsPluginManager.java:167)
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:118)
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:686)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:761)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:371)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)

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