I want to create my own image genration api Using node js, User will be enter image propmt in ky api url as endpoints parameters give me example api in last. I will use hendra ai here is base url "https://mercury.dev.dream-ai.com/api" and here is code example usage "image_response = requests.post(f"{BASE_URL}/v1/portrait", headers={'X-API-KEY': API_KEY}, files={'file': open('img.png','rb')})" this is my api key "sk_hedra-iCkHQNOQhc9t4tBD8LuxKKAGuGUpUTDXgpr8YrbtYRmEswR5dNYjz2TXBTdCy-tN" give me complete node js code. Give me Server.js, and package.json 

I need directly Image when I enter this possible then use parameters like prompt, got this error ""