Unable to download course contents--Gets a ConnectionReset Error

[PhoduCoder]

When I am trying to download the courses, I am getting a connection reset message .

for e in chosen_courses:
    
    course_title = courses_t[int(e)-1]
    print(e + ' '+course_title)
    lecture_homepage = homepage + courses_u[int(e)-1]
    os.chdir(initial_dirname)
    create_download_dir(courses_t[ int(e)- 1])
        
    a,b,c = enumerate_lessons(lecture_homepage)
    lessons = zip(a,b,c)
    
    download_videos(lessons)
    #create_m3u_playlist(course_title)
    
    download_quiz(lessons)
    download_html(lessons)
    
    os.chdir(initial_dirname)
    print('download finished')

Executing the above cell gives me this stacktrace and a strange ConnectionReset error.
Is it implemented by Coursera?

StackTrace:

2 Machine Learning: Regression
/Users/gparasha/Downloads/www-coursera-downloader-master/Machine Learning Regression/Machine Learning Regression

---------------------------------------------------------------------------
ConnectionResetError                      Traceback (most recent call last)
<ipython-input-85-ce301f5ab8ea> in <module>()
      7     create_download_dir(courses_t[ int(e)- 1])
      8 
----> 9     a,b,c = enumerate_lessons(lecture_homepage)
     10     lessons = zip(a,b,c)
     11 

<ipython-input-73-90d09d2102ab> in enumerate_lessons(lecture_homepage)
      1 def enumerate_lessons(lecture_homepage):
      2 
----> 3     weeks = enumerate_weeks(lecture_homepage)
      4     w_digit = len(str(len(weeks)))
      5 

<ipython-input-72-94389983aa33> in enumerate_weeks(lecture_homepage)
      5     weeks = []
      6 
----> 7     if browser.find_by_text('Preview Week 1'):
      8 
      9         week = lecture_homepage.replace('welcome','week/')

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/splinter/driver/webdriver/__init__.py in find_by_text(self, text)
    406     def find_by_text(self, text):
    407         return self.find_by_xpath('//*[text()="%s"]' % text,
--> 408                                   original_find='text', original_query=text)
    409 
    410     def find_by_id(self, id):

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/splinter/driver/webdriver/__init__.py in find_by_xpath(self, xpath, original_find, original_query)
    393         return self.find_by(
    394             self.driver.find_elements_by_xpath, xpath, original_find=original_find,
--> 395             original_query=original_query)
    396 
    397     def find_by_name(self, name):

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/splinter/driver/webdriver/__init__.py in find_by(self, finder, selector, original_find, original_query)
    371         while time.time() < end_time:
    372             try:
--> 373                 elements = finder(selector)
    374                 if not isinstance(elements, list):
    375                     elements = [elements]

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py in find_elements_by_xpath(self, xpath)
    407             elements = driver.find_elements_by_xpath("//div[contains(@class, 'foo')]")
    408         """
--> 409         return self.find_elements(by=By.XPATH, value=xpath)
    410 
    411     def find_element_by_link_text(self, link_text):

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py in find_elements(self, by, value)
    993         return self.execute(Command.FIND_ELEMENTS, {
    994             'using': by,
--> 995             'value': value})['value'] or []
    996 
    997     @property

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py in execute(self, driver_command, params)
    316 
    317         params = self._wrap_value(params)
--> 318         response = self.command_executor.execute(driver_command, params)
    319         if response:
    320             self.error_handler.check_response(response)

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/selenium/webdriver/remote/remote_connection.py in execute(self, command, params)
    470         data = utils.dump_json(params)
    471         url = '%s%s' % (self._url, path)
--> 472         return self._request(command_info[0], url, body=data)
    473 
    474     def _request(self, method, url, body=None):

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/selenium/webdriver/remote/remote_connection.py in _request(self, method, url, body)
    494             try:
    495                 self._conn.request(method, parsed_url.path, body, headers)
--> 496                 resp = self._conn.getresponse()
    497             except (httplib.HTTPException, socket.error):
    498                 self._conn.close()

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py in getresponse(self)
   1329         try:
   1330             try:
-> 1331                 response.begin()
   1332             except ConnectionError:
   1333                 self.close()

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py in begin(self)
    295         # read until we get a non-100 response
    296         while True:
--> 297             version, status, reason = self._read_status()
    298             if status != CONTINUE:
    299                 break

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py in _read_status(self)
    256 
    257     def _read_status(self):
--> 258         line = str(self.fp.readline(_MAXLINE + 1), "iso-8859-1")
    259         if len(line) > _MAXLINE:
    260             raise LineTooLong("status line")

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/socket.py in readinto(self, b)
    584         while True:
    585             try:
--> 586                 return self._sock.recv_into(b)
    587             except timeout:
    588                 self._timeout_occurred = True

ConnectionResetError: [Errno 54] Connection reset by peer