NoClassDefFoundError: reactor/core/scheduler/Schedulers

[bobbyfu]

I have the following dependencies in the gradle file.

dependencies {
. . .
// 'ratelimitj-redis-0.4.1.jar'
compile ('io.projectreactor:reactor-core:3.1.2.RELEASE')
compile ('es.moki.ratelimitj:ratelimitj-redis:0.4.1')
. . .
}
The first line throws me an NoClassDefFoundError. Any idea to workaround this?

RedisClient client = RedisClient.create(RedisURI.create("localhost", 6379));

Caused by: java.lang.NoClassDefFoundError: reactor/core/scheduler/Schedulers
at io.lettuce.core.resource.DefaultClientResources.(DefaultClientResources.java:171)
at io.lettuce.core.resource.DefaultClientResources$Builder.build(DefaultClientResources.java:461)
at io.lettuce.core.resource.DefaultClientResources.create(DefaultClientResources.java:229)
at io.lettuce.core.AbstractRedisClient.(AbstractRedisClient.java:96)
at io.lettuce.core.RedisClient.(RedisClient.java:86)
at io.lettuce.core.RedisClient.create(RedisClient.java:123)
at io.squelch.collector.api.controller.OAuthController.health(OAuthController.java:78)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:97)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963)

[bobbyfu]

I found the issue. I have multiple version of the io.projectreactor:reactor-core libraries in the classpath. Removed the older version of the reactor-core dependency fixed the problem.