我试图在Kotlin建立多对多关系，具体如下：

@Entity
data class Gender(@field:Id var abbr: Char? = null,
                  var description: String = "") : PanacheEntityBase

@Entity
data class Interest(
    var description: String = ""): PanacheEntity()

@Entity
data class User(@field:Id var id: UUID? = null,
                @ManyToOne(fetch = FetchType.LAZY) var gender: Gender? = null,
                var birthday: Long = 0,
                @ManyToMany(fetch = FetchType.LAZY, cascade = [CascadeType.PERSIST])
                @JoinTable(
                    name = "user_interests",
                    joinColumns = [JoinColumn(name = "user_id", referencedColumnName = "id")],
                    inverseJoinColumns = [JoinColumn(name = "interest_id", referencedColumnName = "id")]
                )
                var interests: List<Interest> = listOf()) : PanacheEntityBase

我收到错误信息：

GenerationTarget encountered exception accepting command : Error executing DDL "drop table if exists User cascade" via JDBC Statement: org.hibernate.tool.schema.spi.CommandAcceptanceException: Error executing DDL "drop table if exists User cascade" via JDBC Statement

Error executing DDL "create table User (id uuid not null, birthday int8 not null, gender_abbr char(1), primary key (id))" via JDBC Statement: org.hibernate.tool.schema.spi.CommandAcceptanceException: Error executing DDL "create table User (id uuid not null, birthday int8 not null, gender_abbr char(1), primary key (id))" via JDBC Statement

Caused by: org.postgresql.util.PSQLException: ERROR: syntax error at or near "User"
  Position: 22

我做错什么了？