Ошибка при создании bean-компонента с именем accountController: неудовлетворенная зависимость выражается через поле «Service_functions»

Question

Пытается подключиться к aws DynamoDB, но в настоящее время работает с ошибкой, показанной в заголовке.Что я делаю не так?

Я посмотрел другие онлайн-решения, на которые не нашел ответа, который работал бы для меня.

Полная ошибка -

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'accountController': Unsatisfied dependency expressed through field 'Service_functions'; nested exception is
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'accountHelper': Unsatisfied dependency expressed through field 'dynamoDBRepo'; nested exception is
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dynamoDBRepo': Cannot create inner bean '(inner bean)#4ed4a7e4' of type [org.springframework.orm.jpa.SharedEntityManagerCreator] while setting bean property 'entityManager'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#4ed4a7e4': Cannot resolve reference to bean
'entityManagerFactory' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'entityManagerFactory': Requested bean is currently in creation: Is there an unresolvable circular reference?

Класс модели -

@DynamoDBTable(tableName = "Users")
public class User {

    @DynamoDBAutoGeneratedKey
    @DynamoDBHashKey(attributeName = "_id")
    private String _id;
    private String bloodGroup;
    private String firstName; // DO NOT change this, needs to stay firstName
    private String surname;
    private String email;
    private String password;
    private String addressline;
    private String postcode;
    private String latitude;
    private String longitude;

    public User() {}

    // More Constructors, Getters & Setters

Класс учетной записи -

@Service
public class AccountHelper {

    @Autowired
    private DynamoDBRepo dynamoDBRepo; // Im guessing the repo is failing to autowire?

    @Autowired
    private BCryptPasswordEncoder bCryptPasswordEncoder;

    public User create(String bloodGroup, String firstname, String surname, String email, String password, String addressline, String postcode) { 

        return dynamoDBRepo.save(new User(bloodGroup, firstname, surname, email, bCryptPasswordEncoder.encode(password), addressline, postcode));

    }
}

Хранилище

@Repository
@EnableScan
public interface DynamoDBRepo extends CrudRepository<User, String> {

    User findByFirstName(String firstName);

    User findByEmail(String email);

}

Контроллер -

@Controller
@Component
public class AccountController {

    @Autowired
    private AccountHelper Service_functions;

    @ResponseBody
    @PostMapping(value = "/create/{bloodGroup}/{firstname}/{surname}/{email}/{password}/{addressline}/{postcode}")
    public String create( @PathVariable String bloodGroup , @PathVariable  String firstname, @PathVariable  String surname, @PathVariable  String email, @PathVariable  String password, @PathVariable  String addressline, @PathVariable  String postcode){
        User CreateUser = Service_functions.create(bloodGroup, firstname,  surname,  email,  password,  addressline,  postcode);
        System.out.println("this is working");
        return CreateUser.toString();
    }
}

Начальная точка -

//@EnableEurekaClient
@SpringBootApplication
@EnableJpaRepositories("com.bdonor.accountservice.Repository")
public class AccountServiceApplication {

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

Зависимости -

    <dependencies>
        <!--<dependency>-->
            <!--<groupId>org.springframework.boot</groupId>-->
            <!--<artifactId>spring-boot-starter-data-mongodb</artifactId>-->
        <!--</dependency>-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--<dependency>-->
            <!--<groupId>org.springframework.cloud</groupId>-->
            <!--<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>-->
        <!--</dependency>-->

        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-jpa</artifactId>
            <version>2.1.6.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.eclipse.persistence</groupId>
            <artifactId>javax.persistence</artifactId>
            <version>2.1.0</version>
        </dependency>

        <dependency>
            <groupId>com.github.derjust</groupId>
            <artifactId>spring-data-dynamodb</artifactId>
            <version>5.0.3</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!--https://mvnrepository.com/artifact/com.google.code.gson/gson-->
        <dependency>
            <groupId>com.google.code.gson</groupId>
            <artifactId>gson</artifactId>
            <version>2.8.5</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.tomcat.embed</groupId>
            <artifactId>tomcat-embed-core</artifactId>
            <version>9.0.17</version>
        </dependency>
        <dependency>
            <groupId>com.thoughtworks.xstream</groupId>
            <artifactId>xstream</artifactId>
            <version>1.4.10</version>
        </dependency>
    </dependencies>

Буду признателен за любую помощь / предложения по этому вопросу!