Spring Cloud Netflix method ReactiveHystrixCircuitBreaker.createCommand throw a runtime Exception: java.lang.NoClassDefFoundError: rx/RxReactiveStreams

SpringCloud Version is ： Hoxton.SR12 SpringBoot Version is：2.3.12.RELEASE

My Gateway Moudle dependencies is:

org.springframework.cloud spring-cloud-starter-gateway org.springframework.cloud spring-cloud-starter-netflix-eureka-client org.springframework.boot spring-boot-starter-actuator

rx.RxReactiveStreams not found at runtime

Spring Cloud Netflix method ReactiveHystrixCircuitBreaker.createCommand throw a runtime Exception: java.lang.NoClassDefFoundError: rx/RxReactiveStreams

I noticed version is 1.3.8 for rxjava，it has not definition class #rx.RxReactiveStreams

Comment From: feiquan666

The project address is: MyMicroservice

you can clone it and start it。

try url：http://localhost:5002/api/test/web/hello/3
headers :
{ "Req-Sign": "check sign" }

Comment From: OlgaMaciaszek

Hello @feiquan666, the Hoxton release train is no longer supported. Please upgrade to 2021.x. If the problem persists, please open a GH issue in the Spring Cloud CircuitBreaker repo.