setupProxy.js file not working for single-spa-react

[ram97510]

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

module.exports = function (app) {
app.use(
"/3",
createProxyMiddleware({
target:
"http://localhost:3000",
headers: {
method: "GET",
},
changeOrigin: true,
})
);
};