Fix proxying

frontend/webpack.config.js

@@ -7,6 +7,7 @@ module.exports = {
     path: path.resolve(__dirname, 'dist'),
     filename: 'bundle.js',
     clean: true,
+    publicPath: './',
   },
   resolve: {
     extensions: ['.ts', '.tsx', '.js', '.jsx'],
@@ -31,6 +32,8 @@ module.exports = {
   ],
   devServer: {
     port: 3000,
+    allowedHosts: 'all',
+    historyApiFallback: true,
     proxy: [
       {
         context: ['/api'],