Springcloud: Zuul + Eureka not working - spring-cloud

Question

I spent all day trying to make Zuul + Eureka work together, but I hasn't been lucky with that. Zuul alone, without Eureka, works fine. I've tried a lot of different configurations like this one, which says that all I have to do is turn Zull in an Eureka client (by using #EnableDiscoveryClient at root application class).
My setup is very simple: it consists of a service:8080 (service 1), Zuul:9000 and Eureka:8761.
All the approaches I've tried using Eureka gave me the same error when I tried to access service 1 using Zull (http://localhost:9000/service1 in this case):
com.netflix.zuul.exception.ZuulException: Forwarding error
(...)
com.netflix.client.ClientException: Load balancer does not have available server for client: service1
Service 1 is working fine (I can access it directly from the browser address bar http://localhost:8080) and Eureka shows both Zull and Service 1 correctly registered:
The apps are configured like:
Service 1 (bootstrap.yml):
spring:
application:
name: service1
Service 1 (application.yml):
eureka:
instance:
leaseRenewalIntervalInSeconds: 1
leaseExpirationDurationInSeconds: 2
client:
serviceUrl:
defaultZone: http://127.0.0.1:8761/eureka/
Zuul:
ribbon:
eureka:
enabled: false
eureka:
instance:
leaseRenewalIntervalInSeconds: 1
leaseExpirationDurationInSeconds: 2
client:
serviceUrl:
defaultZone: http://127.0.0.1:8761/eureka/
healthcheck:
enabled: true
server:
port: 9000
Eureka:
server:
port: 8761
eureka:
client:
register-with-eureka: false
fetch-registry: false
logging:
level:
com:
netflix:
eureka: OFF
discovery: OFF
Zuul Annotations at root application class:
#EnableZuulProxy
#EnableDiscoveryClient
Am I missing any important point?