Spring Cloud Config Zookeeper Exception - apache-zookeeper

Question

I am trying to use Spring cloud config with zookeeper for configuration management.
My build.gradle looks like:
dependencies {
compile('org.springframework.boot:spring-boot-starter-actuator')
compile('org.springframework.boot:spring-boot-starter-web')
compile('org.springframework.cloud:spring-cloud-starter-zookeeper-config')
compile('org.springframework.cloud:spring-cloud-config-server')
}
Here is my bootstrap.properties file:
spring.application.name = myapp
spring.cloud.zookeeper.connectString: localhost:2181
This is the application class:
#SpringBootApplication
#EnableConfigServer
public class ConfigServerApplication {
public static void main(String[] args) {
SpringApplication.run(ConfigServerApplication.class, args);
}
}
But the application fails to launch and gives an exception:
Error starting Tomcat context.
Exception: org.springframework.beans.factory.BeanCreationException.
Message: Error creating bean with name 'servletEndpointRegistrar'
defined in class path resource
[org/springframework/boot/actuate/autoconfigure/endpoint/web/ServletEndpointManagementContextConfiguration.class]
: Bean instantiation via factory method failed;
nested exception is org.springframework.beans.BeanInstantiationException
: Failed to instantiate [org.springframework.boot.actuate.endpoint.web.ServletEndpointRegistrar]
: Factory method 'servletEndpointRegistrar' threw exception;
nested exception is org.springframework.beans.factory.BeanCreationException:
Error creating bean with name 'healthEndpoint'
defined in class path
resource [org/springframework/boot/actuate/autoconfigure/health/HealthEndpointConfiguration.class]
: Bean instantiation via factory method failed;
nested exception is org.springframework.beans.BeanInstantiationException
: Failed to instantiate [org.springframework.boot.actuate.health.HealthEndpoint]
: Factory method 'healthEndpoint' threw exception;
nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException
: Error creating bean with name 'configServerHealthIndicator'
defined in class path resource
[org/springframework/cloud/config/server/config/EnvironmentRepositoryConfiguration.class]
: Unsatisfied dependency expressed through
method 'configServerHealthIndicator' parameter 0;
nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException
: Error creating bean with name 'org.springframework.cloud.config.server.config.CompositeConfiguration'
: Unsatisfied dependency expressed through method 'setEnvironmentRepos' parameter 0;
nested exception is org.springframework.beans.factory.BeanCreationException
: Error creating bean with name
'defaultEnvironmentRepository' defined in class path
resource [org/springframework/cloud/config/server/config/DefaultRepositoryConfiguration.class]
: Bean instantiation via factory method failed;
nested exception is org.springframework.beans.BeanInstantiationException
: Failed to instantiate
[org.springframework.cloud.config.server.environment.MultipleJGitEnvironmentRepository]
: Factory method 'defaultEnvironmentRepository' threw exception;
nested exception is java.lang.NullPointerException
What could be the reason behind this? Seems like it is searching for git repository even after specifying zookeeper.