OSError:[Errno 8]执行格式错误:尝试在python中使用硒打开Firefox时出现'geckodriver'

from selenium import webdriver

browser = webdriver.Firefox(executable_path="/usr/bin/geckodriver")
browser.get('http://www.ubuntu.com/')

整个堆栈跟踪如下:

Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/lib/python3.6/dist-packages/selenium/webdriver/firefox/webdriver.py", line 160, in __init__
self.service.start()
File "/usr/local/lib/python3.6/dist-packages/selenium/webdriver/common/service.py", line 76, in start
stdin=PIPE)
File "/usr/lib/python3.6/subprocess.py", line 709, in __init__
restore_signals, start_new_session)
File "/usr/lib/python3.6/subprocess.py", line 1344, in _execute_child
raise child_exception_type(errno_num, err_msg, err_filename)
OSError: [Errno 8] Exec format error: 'geckodriver'

我的geckodriver路径是:

my path to geckodriver is:

/usr/bin/geckodriver

硒在其中:

selenium in /usr/local/lib/python3.6/dist-packages (3.12.0)

提前谢谢！