我试着在Linux机器上运行一个selenium程序，但是我有一些例外：Traceback (most recent call last):

File "", line 1, in

File "/usr/lib/python2.7/site-packages/selenium/webdriver/firefox/webdriver.py", line 154, in __init__

keep_alive=True)

File "/usr/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py", line 151, in __init__

self.start_session(desired_capabilities, browser_profile)

File "/usr/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py", line 240, in start_session

response = self.execute(Command.NEW_SESSION, parameters)

File "/usr/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py", line 308, in execute

self.error_handler.check_response(response)

File "/usr/lib/python2.7/site-packages/selenium/webdriver/remote/errorhandler.py", line 194, in check_response

raise exception_class(message, screen, stacktrace)

selenium.common.exceptions.WebDriverException: Message: Process unexpectedly closed with status: 1

如何修复异常？谢谢你的帮助。