def all = Action.async(parse.json) {
  implicit request => tokenForm.bind(request.body).fold(
    formWithErrors => Future.successful(BadRequest(formWithErrors.toString)),
    form => checkToken(form.token).map(token => {
      val directories = Directories.all.map(directory => {
        Json.toJson(directory)
      })
      Ok(Json.obj("status" -> {if (token.get.id.getOrElse(0) >= 1) true else false}, "message" -> {if (token.get.id.getOrElse(0) >= 1) Json.toJson(directories) else "Invalid token"}))
    })
  )
}

No Json serializer found for type scala.concurrent.Future[play.api.libs.json.JsValue]. Try to implement an implicit Writes or Format for this type.
Ok(Json.obj("status" -> {if (token.get.id.getOrElse(0) >= 1) true else false}, "message" -> {if (token.get.id.getOrElse(0) >= 1) Json.toJson(directories) else "Invalid token"}))
                                                                                                                                            ^