Python selenium cant open url

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Python

Ubuntu

selenium

Hello.I want (first step of my app) to open a link using firefox.
Using the code below ,firefox opens a window and then I get an error in my terminal.What I do wrong?
When I Ctrl+c the terminal I get this error:

clicker.py:4: DeprecationWarning: executable_path has been deprecated, please pass in a Service object
  driver = webdriver.Firefox(executable_path = "/usr/bin/firefox")
^CTraceback (most recent call last):
  File "clicker.py", line 4, in <module>
    driver = webdriver.Firefox(executable_path = "/usr/bin/firefox")
  File "/home/nikos/.local/lib/python3.8/site-packages/selenium/webdriver/firefox/webdriver.py", line 174, in __init__
    self.service.start()
  File "/home/nikos/.local/lib/python3.8/site-packages/selenium/webdriver/common/service.py", line 103, in start
    sleep(0.5)
KeyboardInterrupt

Thanks in advance.

What I have tried:

from selenium import webdriver


driver = webdriver.Firefox(executable_path = "/usr/bin/firefox")
link_site = "https://google.gr/"
driver.get(link_site)