edit "vite.config.ts"

import path from 'path';

import { defineConfig, loadEnv } from 'vite';

import react from '@vitejs/plugin-react'; // <<< ADD THIS LINE if it's missing

export default defineConfig(({ mode }) => {

const env = loadEnv(mode, '.', '');

return {

define: {

'process.env.API_KEY': JSON.stringify(env.GEMINI_API_KEY),

'process.env.GEMINI_API_KEY': JSON.stringify(env.GEMINI_API_KEY)

},

resolve: {

alias: {

'@': path.resolve(__dirname, '.'),

}

},

plugins: [react()], // <<< ADD THIS LINE if it's missing

server: {           // <<< THIS IS THE NEW SERVER BLOCK

host: '0.0.0.0',