[Python] InvalidArgumentException: Message: invalid argument: user data directory is already...

When I am trying to use --user-data-dir for the current user to start Chrome using Selenium I am getting an error as:

File "C:\Program Files (x86)\Python\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 321, in execute
self.error_handler.check_response(response)
File "C:\Program Files (x86)\Python\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 242, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.InvalidArgumentException: Message: invalid argument: user data directory is already in use, please specify a unique value for --user-data-dir argument, or don't use --user-data-dir


How can I fix this error?

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