[JavaScript] (err) await is only valid in async functions and the top level bodies of modules

await is only valid in async functions and the top level bodies of modules

• await은 async function(){} 안에서만 쓸 수 있는 키워드 !

• 문서 참고 : https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Errors/Bad_await