Can not download the PDF

[thomas2004ch]

I changed to using the FireFox. This time I got no error. The FireFox browser is open with an empty page. What does this mean?

After a while the browser is closed itself and I got following message and exception:

Error:
runfile('D:/Temp/Selenium.py', wdir='D:/Temp')
Traceback (most recent call last):

  File "<ipython-input-9-7d93cfa31c34>", line 1, in <module>
    runfile('D:/Temp/Selenium.py', wdir='D:/Temp')

  File "C:\ProgramData\Anaconda3\lib\site-packages\spyder\utils\site\sitecustomize.py", line 880, in runfile
    execfile(filename, namespace)

  File "C:\ProgramData\Anaconda3\lib\site-packages\spyder\utils\site\sitecustomize.py", line 102, in execfile
    exec(compile(f.read(), filename, 'exec'), namespace)

  File "D:/Temp/Selenium.py", line 14, in <module>
    browser = webdriver.Firefox()

  File "C:\ProgramData\Anaconda3\lib\site-packages\selenium\webdriver\firefox\webdriver.py", line 59, in __init__
    self.binary, timeout),

  File "C:\ProgramData\Anaconda3\lib\site-packages\selenium\webdriver\firefox\extension_connection.py", line 47, in __init__
    self.binary.launch_browser(self.profile)

  File "C:\ProgramData\Anaconda3\lib\site-packages\selenium\webdriver\firefox\firefox_binary.py", line 64, in launch_browser
    self._wait_until_connectable()

  File "C:\ProgramData\Anaconda3\lib\site-packages\selenium\webdriver\firefox\firefox_binary.py", line 108, in _wait_until_connectable
    self.profile.path, self._get_firefox_output()))

WebDriverException: Can't load the profile. Profile Dir: C:\Users\ADMINI~1\AppData\Local\Temp\2\tmpk2k3o7ox Firefox output: None