我在getStaticProps中有两个db查询，都正确返回值，但是当我返回props时，只有一个返回正确的数据，另一个将变为null。

const Dash = (props) => {

const config = props.config;

useEffect(() => {
  console.log("config", props.config) /* returns null*/
}, []);

return(/*...*/)
}

export const getStaticProps = async (ctx) => {
  const dbConnection: mysql.Connection = await mysql.createConnection({
    host: process.env.DB_HOST,
    database: process.env.DB_DATABASE,
    user: process.env.DB_USER,
    password: process.env.DB_PASSWORD,
    socketPath: process.env.DB_SOCKET
})

  const newsRes = dbConnection.query(`SELECT * FROM ucp_news`)
  const configRes = dbConnection.query(`SELECT * FROM ucp_config`)

  const responses = await Promise.all([newsRes, configRes])

  console.log(responses[1][0][0]) /* returns config value correctly */

  dbConnection.destroy()
  return {
    props: {
      news: responses[0][0], /* returns correct value */
      config: responses[1][0][0]  /* returns null instead of config value */
    }
  }

}

export default Dash;

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