CXF rest service throwing error: java.lang.NoClassDefFoundError: org/apache/cxf/jaxrs/impl/MetadataMap$KeyComparator

Issue

• We are getting below error for every rest service.

java.lang.NoClassDefFoundError: org/apache/cxf/jaxrs/impl/MetadataMap$KeyComparator
                at org.apache.cxf.jaxrs.impl.MetadataMap.keySet(MetadataMap.java:178)
                at javax.ws.rs.core.Response.fromResponse(Response.java:573)
                at org.apache.camel.component.cxf.jaxrs.SimpleCxfRsBinding.buildResponse(SimpleCxfRsBinding.java:170)
                at org.apache.camel.component.cxf.jaxrs.SimpleCxfRsBinding.populateCxfRsResponseFromExchange(SimpleCxfRsBinding.java:152)
                at org.apache.camel.component.cxf.jaxrs.CxfRsInvoker.returnResponse(CxfRsInvoker.java:184)
                at org.apache.camel.component.cxf.jaxrs.CxfRsInvoker.asyncInvoke(CxfRsInvoker.java:110)
                at org.apache.camel.component.cxf.jaxrs.CxfRsInvoker.performInvocation(CxfRsInvoker.java:68)
                at org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:96)
                at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:189)
                at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:99)
                at org.apache.cxf.interceptor.ServiceInvokerInterceptor$1.run(ServiceInvokerInterceptor.java:59)
                at org.apache.cxf.interceptor.ServiceInvokerInterceptor.handleMessage(ServiceInvokerInterceptor.java:96)
                at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:308)
                at org.apache.cxf.phase.PhaseInterceptorChain.resume(PhaseInterceptorChain.java:278)
                at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:78)
                at org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:254)
                at org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:234)
                at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:208)
                at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:160)
                at org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:180)