https 400 status codes code example
Example 1: 400 http
400 Bad Request
The HyperText Transfer Protocol (HTTP) 400 Bad Request
response status code indicates that the server cannot or will not
process the request due to something that is perceived to be a client error
(e.g., malformed request syntax, invalid request message framing, or deceptive request routing).
Example 2: error: request failed with status code 400
You should add a catch to the get call:
import axios from 'axios';
import config from './config';
axios.get('${config.serverUrl/api/contests')
.then(resp=>{
console.log(resp.data);
})
.catch(error=>{
});