title: Getting "language" is not allowed error in JOI?
body: <p>I recently migrated to new joi repo (@hapi/joi =&gt; joi)</p>
  <p>Now I am getting error when running server</p>
  <pre>throw new AssertError([result.error.details[0].message]);
          ^
  
  Error: &quot;language&quot; is not allowed
  </pre>
  <p>I searched google and SO , but cant find solution</p>
  <p>This is my code :</p>
  <pre><code>  forgetUser: {
      query: {
        email: Joi.string().regex(/^(([^&lt;&gt;()[\]\\.,;:\s@\&quot;]+(\.[^&lt;&gt;()[\]\\.,;:\s@\&quot;]+)*)|(\&quot;.+\&quot;))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/)
        .required()
        .options({ language: { string: { regex: { base: 'must be valid' } } } })
        .label('Email')
      }
    },
  </code></pre>
  <p>Please help me?</p>