DuplicateMemberException

[Halimegenc]

How to fix this issue?
DuplicateMemberException Method already exists

Stacktrace:
org.jboss.classfilewriter.ClassFile.addMethod(ClassFile.java:180)
org.jboss.classfilewriter.ClassFile.addMethod(ClassFile.java:195)
org.jboss.weld.bean.proxy.ProxyFactory.addMethodsFromClass(ProxyFactory.java:611)
org.jboss.weld.bean.proxy.ProxyFactory.addMethods(ProxyFactory.java:564)
org.jboss.weld.bean.proxy.ClientProxyFactory.addMethods(ClientProxyFactory.java:113)
org.jboss.weld.bean.proxy.ProxyFactory.createProxyClass(ProxyFactory.java:457)
org.jboss.weld.bean.proxy.ProxyFactory.getProxyClass(ProxyFactory.java:370)
org.jboss.weld.bean.proxy.ProxyFactory.run(ProxyFactory.java:331)
org.jboss.weld.bean.proxy.ProxyFactory.create(ProxyFactory.java:323)
org.jboss.weld.bean.proxy.ClientProxyFactory.create(ClientProxyFactory.java:83)
org.jboss.weld.bean.proxy.ClientProxyProvider.createClientProxy(ClientProxyProvider.java:205)
org.jboss.weld.bean.proxy.ClientProxyProvider.createClientProxy(ClientProxyProvider.java:195)
org.jboss.weld.bean.proxy.ClientProxyProvider.access$
org.jboss.weld.bean.proxy.ClientProxyProvider$CreateClientProxy.apply(ClientProxyProvider.java:52)
org.jboss.weld.bean.proxy.ClientProxyProvider$CreateClientProxy.apply(ClientProxyProvider.java:48)
org.jboss.weld.util.cache.ReentrantMapBackedComputingCache.lambda$
org.jboss.weld.util.cache.ReentrantMapBackedComputingCache$$Lambda$.get
org.jboss.weld.util.LazyValueHolder$1.computeValue(LazyValueHolder.java:32)
org.jboss.weld.util.LazyValueHolder.get(LazyValueHolder.java:46)
org.jboss.weld.util.cache.ReentrantMapBackedComputingCache.getValue(ReentrantMapBackedComputingCache.java:72)
org.jboss.weld.util.cache.ReentrantMapBackedComputingCache.getCastValue(ReentrantMapBackedComputingCache.java:78)
org.jboss.weld.bean.proxy.ClientProxyProvider.getClientProxy(ClientProxyProvider.java:229)
org.jboss.weld.manager.BeanManagerImpl.getReference(BeanManagerImpl.java:688)
org.jboss.weld.manager.BeanManagerImpl.getInjectableReference(BeanManagerImpl.java:794)
org.jboss.weld.injection.FieldInjectionPoint.inject(FieldInjectionPoint.java:92)
org.jboss.weld.util.Beans.injectBoundFields(Beans.java:336)
org.jboss.weld.util.Beans.injectFieldsAndInitializers(Beans.java:347)
org.jboss.weld.injection.producer.ResourceInjector$1.proceed(ResourceInjector.java:69)
com.ibm.ws.cdi.impl.weld.injection.WebSphereInjectionServicesImpl$3.run(WebSphereInjectionServicesImpl.java:323)
com.ibm.ws.cdi.impl.weld.injection.WebSphereInjectionServicesImpl$3.run(WebSphereInjectionServicesImpl.java:320)
java.security.AccessController.doPrivileged(AccessController.java:678)
com.ibm.ws.cdi.impl.weld.injection.WebSphereInjectionServicesImpl.aroundInject(WebSphereInjectionServicesImpl.java:320)
org.jboss.weld.injection.InjectionContextImpl.run(InjectionContextImpl.java:46)
org.jboss.weld.injection.producer.ResourceInjector.inject(ResourceInjector.java:71)
org.jboss.weld.injection.producer.BasicInjectionTarget.inject(BasicInjectionTarget.java:117)
org.jboss.weld.bean.ManagedBean.create(ManagedBean.java:161)
org.jboss.weld.contexts.unbound.DependentContextImpl.get(DependentContextImpl.java:64)
org.jboss.weld.bean.ContextualInstanceStrategy$DefaultContextualInstanceStrategy.get(ContextualInstanceStrategy.java:100)
org.jboss.weld.bean.ContextualInstance.get(ContextualInstance.java:50)
org.jboss.weld.manager.BeanManagerImpl.getReference(BeanManagerImpl.java:694)
org.jboss.weld.manager.BeanManagerImpl.getInjectableReference(BeanManagerImpl.java:794)
org.jboss.weld.injection.FieldInjectionPoint.inject(FieldInjectionPoint.java:92)

[manovotn]

How to fix this issue?

How to reproduce this issue? Can you create a tiny reproducer? You could use Weld SE to avoid having to use Websphere (which I can see in the stacktrace).
What class/method hierarchy do you have to see such stacktrace?
Also, what Java version do you run?