Почему выдает ошибку?

from time import sleep
 
from selenium.webdriver.common.keys import Keys
from selenium import webdriver
from selenium.common.exceptions import NoSuchElementException
 
from data import *
 
 
class SteamBot:
 
    def __init__(self):
        self.username = username
        self.password = password
        self.driver = webdriver.Chrome(executable_path=r'C:\Users\XXX\PycharmProjects\pythonProject2\chromedriver.exe')
 
    def log_into_steam(self):
        driver = self.driver
        driver.get(steam_link)
        driver.implicitly_wait(5)
        sleep(5)
 
        login_input = driver.find_element_by_name("username").sendKeys("XXX")
       
 
 
def type_steam_guard_code(self):
    if self.xpath_exists("//input[@id = 'twofactorcode_entry']"):
        code = input("Type your Steam Guard code: ")
        self.driver.find_element_by_xpath("//input[@id='twofactorcode_entry']").sendkeys(code)
        sleep(1)
        self.driver.find_element_by_css_selector("div[type=submit]").click()
        sleep(3)
    else:
        sleep(3)
 
 
bot = SteamBot()
if __name__ == "__main__":
    bot.log_into_steam()
 
 
 
def close_browser(self):
    self.driver.close()
    self.driver.quit()

from selenium.webdriver.common.by import By
from selenium import webdriver
 
driver = webdriver.Chrome()
driver.get('https://store.steampowered.com/login/')
 
username = driver.find_element(By.NAME, "username")
username.send_keys('TEST')

        login_input = driver.find_element(By.NAME, "username")
        login_input.send_keys('TEST')

from selenium.webdriver.common.by import By