title: How to Fix react cors error in localhost?
body: <p>I'm working on a react app. Where I'm requesting for an API by AXIOS. But When I run NPM START to test my app in localhost I'm getting CORS error. Here is the error 
  <strong>Access to XMLHttpRequest at 'https://********.com/trx_status.php' from origin '<a href="http://localhost:3000" rel="noreferrer">http://localhost:3000</a>' has been blocked by CORS policy: Request header field privatekey is not allowed by Access-Control-Allow-Headers in preflight response.</strong></p>
  
  <p>I'm new in react. Please tell me how can I solve this issue. Thank you...</p>