Javascript 快速验证程序检查（'；密码确认'；）

我一直收到以下错误：

Result {
  formatter: [Function: formatter],
  errors: [
    {
      value: '12345',
      msg: 'Invalid value',
      param: 'passwordConfirmation',
      location: 'body'
    }
  ]
}

requirePassword: check('password')
    .trim()
    .isLength({ min: 4, max: 20})
    .withMessage('Must be 4 to 20 characters'),

requirePasswordConfirmation: check('passwordConfirmation')
    .trim()
    .isLength({ min: 4, max: 20 })
    .withMessage('Must be 4 to 20 characters')
    .custom((passwordConfirmation, { req }) => {
        if(passwordConfirmation !== req.body.password){
            throw new Error('Passwords must match')
        }
    })

使用以下代码：

Result {
  formatter: [Function: formatter],
  errors: [
    {
      value: '12345',
      msg: 'Invalid value',
      param: 'passwordConfirmation',
      location: 'body'
    }
  ]
}

requirePassword: check('password')
    .trim()
    .isLength({ min: 4, max: 20})
    .withMessage('Must be 4 to 20 characters'),

requirePasswordConfirmation: check('passwordConfirmation')
    .trim()
    .isLength({ min: 4, max: 20 })
    .withMessage('Must be 4 to 20 characters')
    .custom((passwordConfirmation, { req }) => {
        if(passwordConfirmation !== req.body.password){
            throw new Error('Passwords must match')
        }
    })

我尝试了许多不同的密码，但密码确认总是错误的，而不是密码。我不明白为什么在custom（）的回调结束时出现无效值错误

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