Upgrade Spring Cloud Greenwich to 2020.0.5 - java.lang.AbstractMethodError: org.springframework.cloud.netflix.ribbon.RibbonLoadBalancerClient.choose

Question

I'm upgrading Spring Cloud from Greenwich to 2020.0.5 as part of Spring Boot version upgrade from 2.1.x.RELEASE to 2.5.12.

I have the error below if the RestTemplate connects to another microservices.

Caused by: java.lang.AbstractMethodError: org.springframework.cloud.netflix.ribbon.RibbonLoadBalancerClient.choose(Ljava/lang/String;Lorg/springframework/cloud/client/loadbalancer/Request;)Lorg/springframework/cloud/client/ServiceInstance;
        at org.springframework.cloud.client.loadbalancer.RetryLoadBalancerInterceptor.lambda$intercept$2(RetryLoadBalancerInterceptor.java:107)   
        at org.springframework.retry.support.RetryTemplate.doExecute(RetryTemplate.java:329)

org.springframework.retry.RetryException: Could not recover; nested exception is java.lang.AbstractMethodError: org.springframework.cloud.netflix.ribbon.RibbonLoadBalancerClient.choose(Ljava/lang/String;Lorg/springframework/cloud/client/loadbalancer/Request;)Lorg/springframework/cloud/client/ServiceInstance;
        at org.springframework.cloud.client.loadbalancer.LoadBalancedRecoveryCallback.recover(LoadBalancedRecoveryCallback.java:56)      
        at org.springframework.retry.support.RetryTemplate.handleRetryExhausted(RetryTemplate.java:539)
        at org.springframework.retry.support.RetryTemplate.doExecute(RetryTemplate.java:387)
        at org.springframework.retry.support.RetryTemplate.execute(RetryTemplate.java:225)
        at org.springframework.cloud.client.loadbalancer.RetryLoadBalancerInterceptor.intercept(RetryLoadBalancerInterceptor.java:79)    
        at org.springframework.http.client.InterceptingClientHttpRequest$InterceptingRequestExecution.execute(InterceptingClientHttpRequest.java:93)
        at org.springframework.boot.actuate.metrics.web.client.MetricsClientHttpRequestInterceptor.intercept(MetricsClientHttpRequestInterceptor.java:86)
        at org.springframework.http.client.InterceptingClientHttpRequest$InterceptingRequestExecution.execute(InterceptingClientHttpRequest.java:93)
        at org.springframework.http.client.InterceptingClientHttpRequest.executeInternal(InterceptingClientHttpRequest.java:77)
        at org.springframework.http.client.AbstractBufferingClientHttpRequest.executeInternal(AbstractBufferingClientHttpRequest.java:48)
        at org.springframework.http.client.AbstractClientHttpRequest.execute(AbstractClientHttpRequest.java:66)
        at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:776)
        at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:711)
        at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:602)
        at com.testingApp.filter.MyPreFilter.run(MyPreFilter.java:140)
        at com.netflix.zuul.ZuulFilter.runFilter(ZuulFilter.java:117)
        at com.netflix.zuul.FilterProcessor.processZuulFilter(FilterProcessor.java:193)
        at com.netflix.zuul.FilterProcessor.runFilters(FilterProcessor.java:157)
        at com.netflix.zuul.FilterProcessor.preRoute(FilterProcessor.java:133)
        at com.netflix.zuul.ZuulRunner.preRoute(ZuulRunner.java:105)
        at com.netflix.zuul.http.ZuulServlet.preRoute(ZuulServlet.java:125)
        at com.netflix.zuul.http.ZuulServlet.service(ZuulServlet.java:74)

Code:

_restTemplate.exchange(_url, HttpMethod.GET, _httpEntity, JSONObject.class);

pom.xml:

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.5.12</version>
</parent>

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-dependencies</artifactId>
    <version>2020.0.5</version>
    <type>pom</type>
    <scope>import</scope>
</dependency>

If try to upgrade to Hoxton, it can be upgraded without issue. Is it due to Zuul and Ribbon no longer supported in 2020.0.5? Is it possible to make it compatible without change code to Spring Cloud Gateway and Loadbalancer?

I have tried to make sure ribbon is new version which is spring-cloud-starter-netflix-ribbon-2.2.10.RELEASE.jar.