@Repository
public interface ContributorStatRepository extends ReactiveCrudRepository<ContributorStat, Long> { //
    ReactiveCassandraRepository<ContributorStat, Long> {
    Flux<ContributorStat> findByAkonId(String akonId);
}

com.example.sample.controller.ContributorStatControllerTest > shouldReturnBadRequestWithBlankContributorStat FAILED
    java.lang.IllegalStateException
        Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException
            Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException
                Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException

dependencies {
    compile('org.springframework.boot:spring-boot-starter-actuator')
    compile('org.springframework.boot:spring-boot-starter-data-jpa')
    compile('javax.xml.bind:jaxb-api:2.3.0')
    compile('org.springframework.boot:spring-boot-starter-webflux')
    compile('org.springframework.boot:spring-boot-starter-data-cassandra-reactive')
    testCompile('org.springframework.boot:spring-boot-starter-test')
    testCompile('io.projectreactor:reactor-test')
}