title: Missing dependency "keyring: None (NoK)" in Spyder 4
body: <p>Having recently upgraded to Spyder 4 on Anaconda, I am getting this Error message:</p>
  
  <p><a href="https://i.stack.imgur.com/MeJh0.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/MeJh0.png" alt="enter image description here"></a></p>
  
  <p>I am aware of <a href="https://stackoverflow.com/q/53164278/8854526">this question</a>, but that relates to Spyder 3, and is not working in my case.</p>
  
  <p>My system runs on Linux Mint 19 with Anaconda Navigator 1.9.7, Spyder 4.0.0 and Python 2.7.16 64-bit.</p>