How Handle CORS issue using axios in react #6786

Hi
the Browser Security Restriction that is Browsers intentionally hide specific CORS error details from JavaScript code, causing Axios to return a generic "Network Error" (Status 0) for both CORS blocks and actual network failures (like DNS issues).

How to Differentiate them is that You can distinguish a CORS/Network error from a Bad Request (4xx) by checking if error.response exists; if error.response is undefined, the request was blocked (CORS) or failed to reach the server.

Code Logic that you can apply is that Use if (!error.response) to identify these "blocked" requests, whereas actual HTTP errors (like 400 or 404) will always contain the response object with the status code.