Тг бот нормально работал в pycharm и стал выдавать ошибку при загрузке на pythonanywhere

Traceback (most recent call last):
  File "/home/Joerr/main.py", line 41, in <module>
    bot.polling(True, 0)
  File "/home/Joerr/.local/lib/python3.13/site-packages/telebot/__init__.py", line 1198, in polling
    self.__threaded_polling(non_stop=non_stop, interval=interval, timeout=timeout, long_polling_timeout=long_polling_timeout, logger_level=logger_level, allowed_updates=allowed_updates)
  File "/home/Joerr/.local/lib/python3.13/site-packages/telebot/__init__.py", line 1273, in __threaded_polling
    raise e
  File "/home/Joerr/.local/lib/python3.13/site-packages/telebot/__init__.py", line 1235, in __threaded_polling
    self.worker_pool.raise_exceptions()
  File "/home/Joerr/.local/lib/python3.13/site-packages/telebot/util.py", line 150, in raise_exceptions
    raise self.exception_info
  File "/home/Joerr/.local/lib/python3.13/site-packages/telebot/util.py", line 93, in run
    task(*args, **kwargs)
  File "/home/Joerr/.local/lib/python3.13/site-packages/telebot/__init__.py", line 9759, in _run_middlewares_and_handler
    result = handler['function'](message)
  File "/home/Joerr/main.py", line 31, in start
    keyboard.add(locals()['btn' + str(i)])
KeyError: 'btn0'

import telebot
import random

bot =telebot.TeleBot('7520081425:AAHXql0mtqLFCQBxSwQxa vdwRgrL-tyAHWg')

@bot.callback_query_handler(func=lambda call: call.data == 'right')
def right(message):
    bot.send_message(message.from_user.id, "✅Правильно✅")
start(message)

@bot.callback_query_handler(func=lambda call: call.data == 'false')
def false(message):
    bot.send_message(message.from_user.id, "❌Попробуй еще раз❌")

@bot.message_handler(commands=['start'])
def start(message):
    c=random.randint(0, len(a)-1)
    f=a[c]
    print(f)
    b=f[:-2]
    print(b)
    keyboard = telebot.types.InlineKeyboardMarkup()
    g=f[-1]
    print(g)
    j=[]
    for i in range(len(b)):
        if str(i)==g:
            k=b[i]
            locals()['btn' + str(i)] = telebot.types.InlineKeyboardButton(k, callback_data='right')
            keyboard.add(locals()['btn' + str(i)])
        else:
            k=b[i]
            locals()['btn' + str(i)] = telebot.types.InlineKeyboardButton(k, callback_data='false')
            keyboard.add(locals()['btn' + str(i)])

    bot.send_message(message.from_user.id, "Выбери букву на которую падает ударение", reply_markup=keyboard)


f=open('база2.txt', encoding='utf-8')
s=f.readlines()
a=[]
for i in s:
    a.append(i[:-1])
bot.polling(True, 0)