<b>description</b> <u>The server encountered an internal error that prevented it from fulfilling this request.</u></p>\r

com.alibaba.fastjson.serializer.MapSerializer.write(MapSerializer.java:188)

com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:254)

com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:187)

com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:263)

com.alibaba.fastjson.serializer.SerializeWriter.writeString(SerializeWriter.java:1366)

com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)

com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:142)

com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)

org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:485)

com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)