UnboundLocalError: local variable 'driver' referenced before assignment

import requests
from selenium import webdriver
import time
 
 
def get_data(url):
    headers = {
        'User-Agent': 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:91.0) Gecko/20100101 Firefox/91.0',
        'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',
        'Accept-Encoding': 'gzip, deflate, br',
        'Accept-Language': 'ru-RU,ru;q=0.8,en-US;q=0.5,en;q=0.3',
        'Cache-Control': 'max-age=0',
        'Connection': 'keep-alive'
    }
    r = requests.get(url=url, headers=headers)
 
    with open(f'test/index.html', 'w') as file:
        file.write(r.text)
 
 
def get_data_with_selenium(url):
    options = webdriver.FirefoxOptions()
    options.set_preference('general.useragent.override',
                           'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:91.0) Gecko/20100101 Firefox/91.0')
 
    try:
        driver = webdriver.Firefox(
            executable_path='/home/alina/PycharmProjects/main/geckodriver',
            options=options
        )
        driver.get(url=url)
        time.sleep(5)
 
        with open(f'test/index_selenium.html', 'w') as file:
            file.write(driver.page_source)
 
    except Exception as ex:
        print(ex)
 
    finally:
        driver.close()
        driver.quit()
 
 
def main():
    # get_data('любой юрл')
    get_data_with_selenium('любой юрл')
 
 
if __name__ == '__main__':
    main()