Neo4j：节点上的MissingIndexException

我正在尝试在Scala中设置Spring-Data-Neo4j项目的框架 . 当我运行JUnit测试时，我得到一个MissingIndexException，我真的没有任何线索的原因 . 我之前使用纯Java而不是scala实体/测试中的相同配置（和依赖项）成功运行了相同的测试 .

任何帮助都可以 .

（scala）持久化实体：

@NodeEntity
class User extends Identifiable {

    def this(email: String = null, name: String = null) = {
        this()
        this.email = email
        this.name = name
    }

    @Indexed
    var name: String = _

    @Indexed (unique = true)
    var email: String = _

    @Fetch
    @RelatedTo(`type` = "IS_A", direction = Direction.BOTH)
    var agent: Agent = new Agent
}

这是（仍然是java）存储库接口：

public interface UserRepository extends GraphRepository<User> {
    @Query("start n=node:User(email={0}) return count(*)")
    int count(String email);

    User findByEmail(String email);
}

我运行的JUnit测试：

@Test
@Transactional
def testCountEmails = {
    assertEquals(0, userRepository.count("mail"))
    userRepository.save(new User(email = "mail"))
    assertEquals(1, userRepository.count("mail"))
}

日志的摘录：

[main] DEBUG org.springframework.data.neo4j.support.query.CypherQueryEngineImpl - Executing cypher query: MATCH (ref:ReferenceNode {name:{name}}) RETURN ref params {name=root}
[main] DEBUG org.springframework.data.neo4j.support.query.CypherQueryEngineImpl - Executing cypher query: match (n) with n limit 1 set n:`SDN_LABEL_STRATEGY` remove n:`SDN_LABEL_STRATEGY` return count(*) params {}
[main] DEBUG org.springframework.data.neo4j.support.schema.SchemaIndexProvider - CREATE CONSTRAINT ON (n:`User`) ASSERT n.`email` IS UNIQUE
[main] DEBUG org.springframework.data.neo4j.support.query.CypherQueryEngineImpl - Executing cypher query: CREATE CONSTRAINT ON (n:`User`) ASSERT n.`email` IS UNIQUE params {}
[main] DEBUG org.springframework.data.neo4j.support.schema.SchemaIndexProvider - CREATE INDEX ON :`User`(`name`)
[main] DEBUG org.springframework.data.neo4j.support.query.CypherQueryEngineImpl - Executing cypher query: CREATE INDEX ON :`User`(`name`) params {}

我得到的错误：

org.springframework.dao.InvalidDataAccessResourceUsageException: Error executing statement start n=node:User(email={0}) return count(*); nested exception is org.springframework.dao.InvalidDataAccessResourceUsageException: Error executing statement start n=node:User(email={0}) return count(*); nested exception is org.neo4j.cypher.MissingIndexException: Index `User` does not exist