Got this issue

I used the quickstart installation in aws server but i still get this issue.

Traceback (most recent call last):
File "quickstart.py", line 24, in
headless_browser=True)
File "/usr/local/lib/python3.6/dist-packages/instapy/instapy.py", line 319, in __init__
self.logger,
File "/usr/local/lib/python3.6/dist-packages/instapy/browser.py", line 114, in set_selenium_local_session
options=firefox_options,
File "/usr/local/lib/python3.6/dist-packages/selenium/webdriver/firefox/webdriver.py", line 174, in __init__
keep_alive=True)
File "/usr/local/lib/python3.6/dist-packages/selenium/webdriver/remote/webdriver.py", line 157, in __init__
self.start_session(capabilities, browser_profile)
File "/usr/local/lib/python3.6/dist-packages/selenium/webdriver/remote/webdriver.py", line 252, in start_session
response = self.execute(Command.NEW_SESSION, parameters)
File "/usr/local/lib/python3.6/dist-packages/selenium/webdriver/remote/webdriver.py", line 321, in execute
self.error_handler.check_response(response)
File "/usr/local/lib/python3.6/dist-packages/selenium/webdriver/remote/errorhandler.py", line 242, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.SessionNotCreatedException: Message: Unable to find a matching set of capabilities