1.You have to convert example.env file to .env file 2.Instead of YOUR_API_KEY you should enter your own ChatGPT API key
-How do I get a ChatGPT API Key? 1.You must create an account and login at the url https://platform.openai.com/docs/guides/chat 2.Personal->View API Keys-> +Create new secret key -> Copy API Key
Then run "npm install" + "npm start" commands in order.