我得到这个错误

Caused by: java.lang.IllegalArgumentException: Unable to locate persister: model.Author

尝试在spring启动应用程序中使用entitymanager时。我不知道为什么它不认识它。
主要类别：

@SpringBootApplication
@ComponentScan(basePackages = {"config"})
@EntityScan(basePackages = {"model"})
public class SpielwieseJpaJdbcApplication implements CommandLineRunner {

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

    @Override
    public void run(String... args) throws Exception {
        EntityManagerFactory emf = Persistence.createEntityManagerFactory("sks");
        EntityManager em = emf.createEntityManager();
        Author author = em.find(Author.class,1);
    }
}

实体本身：

@Data
@NoArgsConstructor
@AllArgsConstructor

@Entity
@Table(name = "authors")
public class Author {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @Column(nullable = false)
    private String name;
}

最后是定义持久性单元的persistence.xml文件：

<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://xmlns.jcp.org/xml/ns/persistence"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_2.xsd"
             version="2.2">
    <persistence-unit name="sks" transaction-type="RESOURCE_LOCAL">
        <exclude-unlisted-classes>false</exclude-unlisted-classes>

        <properties>
            <property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/sks?serverTimezone=Europe/Vienna" />
            <property name="javax.persistence.jdbc.user" value="sks" />
            <property name="javax.persistence.jdbc.password" value="technikum1" />
            <property name="hibernate.show_sql" value="true" />
        </properties>
    </persistence-unit>
</persistence>

我的项目结构是直截了当的
main/java//main/java//author.java
有什么想法吗？
在这一点上我基本上绝望了。