title: Unable to find element and input value using selenium
body: <p>My objective is to take a value (in my case a shipment tracking #) and input it into a tracking field on a website using selenium. I am unable to input the value and get the following error message:</p>
  
  <pre><code>from selenium import webdriver
  from selenium.webdriver.common.keys import Keys
  
  chromedriver = "/Users/GUVA/Downloads/chromedriver"
  driver = webdriver.Chrome(chromedriver)
  driver.get("https://www.17track.net/en")
  
  #data = df.values[1] # grabbing one tracking number from an excel file
  
  # click "agree" to close window
  python_button = driver.find_elements_by_xpath('//*[@id="modal-gdpr"]/div/div/div[3]/button')[0]
  python_button.click()
  
  # enter tracking number into text box
  que=driver.find_element_by_id('//input[@id="jsTrackBox"]')
  que.send_keys("data")
  
  Traceback (most recent call last):
  File "/Users/GUVA/PycharmProjects/Shipment_Tracking/Track Shipment.py", line 26, in &lt;module&gt;
  que=driver.find_element_by_id('//input[@id="jsTrackBox"]')
  File "/Users/GUVA/PycharmProjects/Shipment_Tracking/venv/lib/python3.8/site-packages/selenium/webdriver/remote/webdriver.py", line 360, in find_element_by_id
  return self.find_element(by=By.ID, value=id_)
  File "/Users/GUVA/PycharmProjects/Shipment_Tracking/venv/lib/python3.8/site-packages/selenium/webdriver/remote/webdriver.py", line 976, in find_element
  return self.execute(Command.FIND_ELEMENT, {
  File "/Users/GUVA/PycharmProjects/Shipment_Tracking/venv/lib/python3.8/site-packages/selenium/webdriver/remote/webdriver.py", line 321, in execute
  self.error_handler.check_response(response)
  File "/Users/GUVA/PycharmProjects/Shipment_Tracking/venv/lib/python3.8/site-packages/selenium/webdriver/remote/errorhandler.py", line 242, in check_response
  raise exception_class(message, screen, stacktrace)
  selenium.common.exceptions.InvalidSelectorException: Message: invalid selector: An invalid or illegal selector was specified
  (Session info: chrome=83.0.4103.61)
  </code></pre>
  
  <p>Any suggestions please?</p>