can anyone help plzzzz,,,,,,/////????

System

WhatsApp Bomber *
Version 1.1 *
Made By Debayan Sutradhar *
(ladiesman6969, DX_BETA) *
OPEN SOURCE IS LOVE *
https://github.com/ladiesman6969/whatsappBomber *
16/08/2018 *

Checking for WebDriver... Please select any one of the Web Drivers :
1. Mozilla FireFox (Gecko Driver) 1 Loading Gecko Web Driver ... Traceback (most recent call last): File "bomber.py", line 150, in app_method_1() File "bomber.py", line 131, in app_method_1 driver = webdriver.Firefox() File "/usr/lib/python3/dist-packages/selenium/webdriver/firefox/webdriver.py", line 170, in init RemoteWebDriver.init( File "/usr/lib/python3/dist-packages/selenium/webdriver/remote/webdriver.py", line 152, in init self.start_session(capabilities, browser_profile) File "/usr/lib/python3/dist-packages/selenium/webdriver/remote/webdriver.py", line 249, in start_session response = self.execute(Command.NEW_SESSION, parameters) File "/usr/lib/python3/dist-packages/selenium/webdriver/remote/webdriver.py", line 318, in execute self.error_handler.check_response(response) File "/usr/lib/python3/dist-packages/selenium/webdriver/remote/errorhandler.py", line 242, in check_response raise exception_class(message, screen, stacktrace) selenium.common.exceptions.WebDriverException: Message: invalid argument: can't kill an exited process