Caused by: java.lang.IllegalStateException: Overrides unsupported: at feign.Util.checkState(Util.java:130) ~[feign-core-10.2.3.jar:na] at feign.Contract$BaseContract.parseAndValidatateMetadata(Contract.java:67) ~[feign-core-10.2.3.jar:na] at com.alibaba.cloud.sentinel.feign.SentinelContractHolder.parseAndValidatateMetadata(SentinelContractHolder.java:49) ~[spring-cloud-alibaba-sentinel-2.1.0.RELEASE.jar:2.1.0.RELEASE] at feign.ReflectiveFeign$ParseHandlersByName.apply(ReflectiveFeign.java:154) ~[feign-core-10.2.3.jar:na] at feign.ReflectiveFeign.newInstance(ReflectiveFeign.java:52) ~[feign-core-10.2.3.jar:na] at feign.Feign$Builder.target(Feign.java:251) ~[feign-core-10.2.3.jar:na] at org.springframework.cloud.openfeign.HystrixTargeter.target(HystrixTargeter.java:36) ~[spring-cloud-openfeign-core-2.1.2.RELEASE.jar:2.1.2.RELEASE] at org.springframework.cloud.openfeign.FeignClientFactoryBean.loadBalance(FeignClientFactoryBean.java:238) ~[spring-cloud-openfeign-core-2.1.2.RELEASE.jar:2.1.2.RELEASE] at org.springframework.cloud.openfeign.FeignClientFactoryBean.getTarget(FeignClientFactoryBean.java:267) ~[spring-cloud-openfeign-core-2.1.2.RELEASE.jar:2.1.2.RELEASE] at org.springframework.cloud.openfeign.FeignClientFactoryBean.getObject(FeignClientFactoryBean.java:247) ~[spring-cloud-openfeign-core-2.1.2.RELEASE.jar:2.1.2.RELEASE] at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:171) ~[spring-beans-5.1.8.RELEASE.jar:5.1.8.RELEASE] ... 43 common frames omitted

Comment From: spencergibb

Unfortunately, a stack trace with no context isn't helpful. Can you specify boot and cloud versions, your configuration and your feign client?

Comment From: wulilele

org.springframework.cloud:Greenwich.SR2 org.springframework.boot:2.1.6.RELEASE