Akka HTTP、Spray Json和选项字段按要求失败

我有一门案例课:

case class OpcTagPlaybook(name: String, tags: Seq[OpcTagAtTime], looped: Boolean, enabled: Option[String])

带有可选的启用字段,该字段将包含日期。 Spray Json描述了编码/解码:

implicit val opcTagPlaybookFormat = jsonFormat4(OpcTagPlaybook)

以及akka http中的一条路由:

post {
  entity(as[OpcTagPlaybook]) { playbook =>
    val playbookCreated: Future[_] =
      (opcTagPlaybookActor ? UpsertPlaybook(playbook))
    onSuccess(playbookCreated) { _ =>
      log.info("Created playbook [{}]", playbook.name)
      complete((StatusCodes.Created, "ok"))
    }
  }
})

由于某些原因,在没有createdAt字段的情况下过账失败:

邮寄:

{"name": "test1",
"tags":[{"offset": 100, "tag": "hello", "value": "yo"}],
"looped": true
}

失败:

The request content was malformed:
Object is missing required member 'enabled'

如果我发帖,它会给我另一个错误:

 {"name": "test1",
 "tags":[{"offset": 100, "tag": "hello", "value": "yo"}],
 "looped": true,
 "enabled": "2018-08-08"
 }

给予

The request content was malformed:
spray.json.JsString cannot be cast to scala.Option

我假设这是akka http之间的一些相互作用,所以我将更手动地处理输入,但我只是想了解我在这里做错了什么。