Path rewritting is happening after first api call

[BeforeuCode]

Hi i am using proxy with express server that runs Angular Universal. I am trying to proxy request to my backend but unfortunatelly i am getting errors. And it looks like path rewriting happens after the first call to api. There is my server.ts configuration. I want to proxy every /api call to localhost:8080 and remove /api from path.
for example call from localhost:4200/api/public/offers?category=NEW should be proxied to localhost:8080/public/offers?category=NEW

import * as proxy from 'http-proxy-middleware'
.
.
const app = express();
app.set('view engine', 'html');
app.set('views', distFolder);
app.engine('html', ngExpressEngine({
bootstrap: AppServerModuleNgFactory
}));
//Proxy
var options = {
target: 'http://localhost:8080', // target host
pathRewrite: {
'^/api': ''
},
logLevel: 'debug',
};
var apiProxy = proxy(options);
app.use('/api',apiProxy);

//Routes
app.get('.', express.static(distFolder));
app.get('*', (req, res) => {
res.render('index', { req });
});

app.listen(4200, () => console.log('Running on http://localhost:4200'));

And this is what i am getting on console

Angular is running in the development mode. Call enableProdMode() to enable the production mode.
data
[Error]
[Error]
[Error]
[HPM] Rewriting path from "/api/public/offer?category=NEW" to "/public/offer?category=NEW"
[HPM] GET /api/public/offer ~> http://localhost:8080

where data is first call to the api