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java.lang.IllegalArgumentException: interface org.springframework.messaging.simp.annotation.SendToUser is not visible from class loader	at java.lang.reflect.Proxy$ProxyClassFactory.apply(Proxy.java:616)	at java.lang.reflect.Proxy$ProxyClassFactory.apply(Proxy.java:592)	at java.lang.reflect.WeakCache$Factory.get(WeakCache.java:244)	at java.lang.reflect.WeakCache.get(WeakCache.java:141)	at java.lang.reflect.Proxy.getProxyClass0(Proxy.java:455)	at java.lang.reflect.Proxy.newProxyInstance(Proxy.java:738)	at org.springframework.core.annotation.AnnotationUtils.synthesizeAnnotation(AnnotationUtils.java:1280)	at org.springframework.core.annotation.AnnotationUtils.findAnnotation(AnnotationUtils.java:500)	at org.springframework.core.annotation.AnnotationUtils.findAnnotation(AnnotationUtils.java:561)	at org.springframework.messaging.handler.HandlerMethod.getMethodAnnotation(HandlerMethod.java:214)	at org.springframework.messaging.handler.HandlerMethod$HandlerMethodParameter.getMethodAnnotation(HandlerMethod.java:275)	at org.springframework.messaging.simp.annotation.support.SendToMethodReturnValueHandler.supportsReturnType(SendToMethodReturnValueHandler.java:136)