Guys im getting this error :

Error: connect ECONNREFUSED 127.0.0.1:8000
    at TCPConnectWrap.afterConnect [as oncomplete] (node:net:1595:16)
    at TCPConnectWrap.callbackTrampoline (node:internal/async_hooks:130:17) {
  errno: -4078,
  code: 'ECONNREFUSED',
  syscall: 'connect',
  address: '127.0.0.1',
  port: 8000
}
 â—‹ Compiling /_error ...
 ✓ Compiled /_error in 8.1s (2990 modules)

My app.py inside /api :

from fastapi import FastAPI, HTTPException, Body
from fastapi.middleware.cors import CORSMiddleware
import httpx

app = FastAPI()


app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],  
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)   

discord_webhook_url = "https://discord.com/api/webhooks/"

@app.post("/api/send-message")
async def send_message(
    data: dict = Body(...),
):
    try:
        name = data['name']
        email = data['email']
        message = data['message']
    except KeyError as e:
        raise HTTPException(status_code=422, detail=f"Missing required field: {e}")

    print(f"Received data: Name={name}, Email={email}, Message={message}")


    form_data = {
        "content": "New message from website",
        "username": f"New Message from {email}",
        "embeds": [
            {
                "title": "New Message",
                "description": f"**Name:** {name}\n**Email:** {email}\n**Message:** {message}",
                "color": 16777215  
            }
        ]
    }


    try:
        async with httpx.AsyncClient() as client:
            response = await client.post(discord_webhook_url, json=form_data)

        if response.status_code != 204:
            raise HTTPException(status_code=response.status_code, detail="Failed to send message to Discord")
    except Exception as e:
        raise HTTPException(status_code=500, detail=f"Error sending message to Discord: {str(e)}")

    return {"message": "Message sent successfully"}

next config :

/** @type {import('next').NextConfig} */
const nextConfig = {
    rewrites: async () => {
      return [
        {
          source: "/api/:path*",
          destination:
            process.env.NODE_ENV === "development"
              ? "http://127.0.0.1:8000/api/:path*"
              : "/api/",
        },
      ];
    },
  };
  
  module.exports = nextConfig;
  

When i try to go to localhost:3000/api/docs
I get this error :
Error: connect ECONNREFUSED 127.0.0.1:8000
at TCPConnectWrap.afterConnect [as oncomplete] (node1595:16)
at TCPConnectWrap.callbackTrampoline (node:internal/async_hooks:130:17) {
errno: -4078,
code: 'ECONNREFUSED',
syscall: 'connect',
address: '127.0.0.1',
port: 8000
}
â—‹ Compiling /_error ...
✓ Compiled /_error in 8.1s (2990 modules)


What is this? can someone please help me?