Connecting GH definition to Rhino Compute server

Hello, I am testing Rhino Compute and Grasshopper definition, but I could not make the server load the GH definition.

My server setup and GH definition are extremely simple.

Can anyone please let me know how I make this connection work?

---------------- server.py

from flask import Flask
import requests
import urllib.parse
import json
import os

app = Flask(__name__)

@app.route("/test_compute")
def test_compute():
    # Absolute path to GH file
    gh_path = r"D:\Desktop\aa.gh"
    if not os.path.exists(gh_path):
        return f"Error: GH file not found at {gh_path}"

    # Encode for URL
    encoded_path = urllib.parse.quote(gh_path.replace("\\", "/"))
    url = f"http://localhost:5000/grasshopper?pointer={encoded_path}"

    # Prepare input for parameter "x"
    payload = {
        "x": 5
    }

    try:
        print(f"Calling Rhino Compute: {url}")
        res = requests.post(url, json=payload, timeout=30)
        res.raise_for_status()
        return json.dumps(res.json(), indent=2)
    except Exception as e:
        return f"Failed: {e}"

if __name__ == "__main__":
    app.run(port=3000)

---------------- error message
CG [12:05:27 DBG] Received a HTTP POST request to the /grasshopper endpoint CG [12:05:27 WRN] Unable to load grasshopper definition CG [12:05:27 ERR] Connection id "0HNBTRRMN8SH0", Request id "0HNBTRRMN8SH0:00000001": An unhandled exception was thrown by the application. System.Exception: Unable to load grasshopper definition at compute.geometry.ResthopperEndpointsModule.GrasshopperSolveHelper(Schema input, String body, Stopwatch stopwatch, HttpContext ctx) in D:\Desktop\Git\compute.rhino3d\src\compute.geometry\ResthopperEndpoints.cs:line 83 at compute.geometry.ResthopperEndpointsModule.Grasshopper(HttpContext ctx) in D:\Desktop\Git\compute.rhino3d\src\compute.geometry\ResthopperEndpoints.cs:line 174 at Microsoft.AspNetCore.Routing.EndpointMiddleware.<Invoke>g__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger) at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpProtocol.ProcessRequests[TContext](IHttpApplication1 application)
`