title: Cannot focus element using selenium
body: <p>I am trying to click on an element and send keys to it but i get cannot focus on element error. I tried using action chains but was not working. </p>
  
  <p>I am able to click the element but when i send keys it throws "cannot focus on element error"</p>
  
  <pre><code>D = C.find_element_by_xpath('//*[@id="pcsTableId"]/tbody/tr[9]/td[4]')
  &gt;&gt;&gt; D.click()
  &gt;&gt;&gt; D.send_keys("4556741")
  WebDriverException: Message: unknown error: cannot focus element
  (Session info: chrome=59.0.3071.115)
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/bPBKb.jpg" rel="nofollow noreferrer">inspect element page</a></p>