"http-proxy-middleware" does not work in production mode. (react)

Question

my setupProxy.js

const { createProxyMiddleware } = require("http-proxy-middleware");

module.exports = function (app) {
  app.use(
    createProxyMiddleware(`/API`, {
      target: "https://dev-api.id.com",
      changeOrigin: true,
      pathRewrite: {
        "^/API": "",
      },
    })
  );
};

in localhost

const data = await axios.get('/API/user')...     
browser send request url ==> 'https://dev-api.id.com/user'

i get status code 200

in amazon s3 production

const data = await axios.get('/API/user')...
browser send request url ==> https://my_amazon_url.com/API/user

i want to request to https://dev-api.id.com/user like "localhost"

but production mode send request to https://my_amazon_url.com/API/user

because my request url doesn't chage. so i get status code 404.

how can i solve this problem?