org.springframework.context.ApplicationContextException: Unable to start embedded container; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'myUserRepository': Could not resolve matching constructor (hint: specify index/type/name arguments for simple parameters to avoid type ambiguities)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:137) ~[spring-boot-1.5.8.RELEASE.jar:1.5.8.RELEASE]

public interface myUserRepository extends ElasticsearchRepository<MyUser, String> {

    Optional<MyUser> findById(final String id);

    MyUser findByUsername(String username);
}

@Document(indexName = "store", type = "MyUser")
public class MyUser {
    @Id
    private String id;
    private String username;
    private String password;
    @Field( type = FieldType.Nested)
    private Set<Role> roles;
    private String name;

    public MyUser() {
    }

    public MyUser(final String username, final String password, final Set<Role> roles, final String name) {
        this.username = username;
        this.password = password;
        this.roles = roles;
        this.name = name;
    }

    public String getId() {
        return id;
    }

    public void setId(final String id) {
        this.id = id;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(final String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(final String password) {
        this.password = password;
    }

    public Set<Role> getRoles() {
        return roles;
    }

    public void setRoles(final Set<Role> roles) {
        this.roles = roles;
    }

    public String getName() {
        return name;
    }

    public void setName(final String name) {
        this.name = name;
    }
}