Spring Neo4J nocontent to map to object

i want to use neo4j in my application. I already tried my code using the embedded database, but i want to connect to an existing database. My configuration looks like this:

@Configuration
@EnableNeo4jRepositories(basePackages = "de.kevin.catAppNeo4j")
public class ApplicationConfig extends Neo4jConfiguration {

    public ApplicationConfig() {
        setBasePackage("de.kevin.catAppNeo4j");
    }

    @Bean
    GraphDatabaseService graphDatabaseService() {

        return new SpringRestGraphDatabase("http://localhost:7474/db/data/");
    }
}

My Application looks like this:

@SpringBootApplication
public class Application implements CommandLineRunner {

    @Autowired
    ElementRepository personRepository;
    @Autowired
    GraphDatabase graphDatabase;

    @Override
    public void run(String... args) throws Exception {

        Element e1 = new Element("USER", "page");


        try (Transaction tx = graphDatabase.beginTx()){
            personRepository.save(e1);
            [...]

            tx.success();
        }
    }

    public static void main(String[] args) throws Exception {
        SpringApplication.run(Application.class, args);
    }
}

Then theres a node element, a repository and a relationship, which probably shouldnt matter.

My pom.xml has these dependencies

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-validator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-neo4j-rest</artifactId>
            <version>3.2.0.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>javax.el</groupId>
            <artifactId>javax.el-api</artifactId>
            <version>2.2.4</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-neo4j</artifactId>
        </dependency>
    </dependencies>

If i try to connect to my server running on localhost:7474 i get this exceptionstack http://ift.tt/1DPrKvX