Foxes and Geese (239) - Starting a new game causes a 500 Server Error

Posting the 'token', 'start' and 'geese' fields to the server results in a 500 error.

Code used for interacting with the server.

import requests
from requests.exceptions import HTTPError, RequestException

URL = "http://2.59.218.221/foxgeese.php"
TOKEN = "Hm1QM+FSIiACW/+GG5M4XjE0"


def send_text(data):
    body_items = [("token", TOKEN)] + list(data.items())
    body = "\n".join(f"{k}: {v}" for k, v in body_items)
    headers = {"Content-Type": "text/plain"}

    try:
        response = requests.post(URL, data=body, headers=headers, timeout=30)
        response.raise_for_status()

    except HTTPError as e:
        print(f"HTTP error occurred: {e} (Status: {response.status_code})")
        print(f"Response body: {response.text}")
        raise
    except RequestException as e:
        print(f"Connection or timeout error occurred: {e}")
        raise

    resp = {}
    for line in response.text.splitlines():
        if ": " in line:
            k, v = line.split(": ", 1)
            resp[k.strip()] = v.strip()
    return resp

print("#1", send_text({}))
print("#2", send_text({"start": 123}))
print("#3", send_text({"geese": "du"}))
print("#4", send_text({"start": 123, "geese": "du"}))

Output:

#1 {'error': 'You are trying to continue the task which was not started'}
#2 {'message': 'started', 'error': 'No "geese" in your request?'}
#3 {'error': 'The game is not started yet!'}
HTTP error occurred: 500 Server Error: Internal Server Error for url: http://2.59.218.221/foxgeese.php (Status: 500)