[react] Parse Error: Adjacent JSX elements must be wrapped in an enclosing tag

참조

 

// WRONG!
return (  
    <C1 />
    <C2 />
)

// Correct
return (
    <div>
       <C1 />
       <C2 />
    </div>
)

// More Correct
return (
    <React.Fragment>
       <C1 />
       <C2 />
    </React.Fragment>
)