[Python] internal server error when trying to access my bitcoin core server via JSON-RPC

I am trying to access information from my bitcoin core server using JSON-RPC in python, but it returns this error:

500 Server Error: Internal Server Error for url: http://usernameassword@127.0.0.1:8332/


it is not an issue with the username or password as this is setup in my bitcoin.config file as such:

server=1
rpcuser=username
rpcpassword=password
rpcport=8332
rpcallowip=127.0.0.1


here is my python code:

import requests
import json

# Bitcoin Core RPC settings
rpc_url = "http://usernameassword@127.0.0.1:8332/"
headers = {"Content-Type": "application/json"}

# Function to query Bitcoin Core via RPC
def rpc_call(method, params=None):
data = {
"jsonrpc": "1.0",
"id": "python",
"method": method,
"params": params or []
}
try:
response = requests.post(rpc_url, headers=headers, json=data)
response.raise_for_status() # Check for HTTP request errors
return response.json() # Parse the response JSON
except requests.exceptions.RequestException as e:
print(f"Request failed: {e}")
return None


any idea why I'm getting this error? thank you

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