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java.lang.IllegalArgumentException: Can not copy a non-root Method	at java.lang.reflect.Method.copy(Method.java:151)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at org.springsource.loaded.jvm.JVM.copyMethod(JVM.java:134)	at org.springsource.loaded.ri.OriginalClassInvoker.createJavaMethod(OriginalClassInvoker.java:68)	at org.springsource.loaded.ri.ReflectiveInterceptor.jlClassGetDeclaredMethods(ReflectiveInterceptor.java:151)	at org.springframework.core.type.StandardAnnotationMetadata.getAnnotatedMethods(StandardAnnotationMetadata.java:152)	at org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:292)	at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:232)	at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:199)	at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:168)	at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:321)	at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:243)	at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:273)	at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:98)	at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:678)	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:520)	at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118)	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:766)	at org.springframework.boot.SpringApplication.createAndRefreshContext(SpringApplication.java:361)	at org.springframework.boot.SpringApplication.run(SpringApplication.java:307)	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1191)	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1180)	at hello.Application.main(Application.java:13)