title: Laravel 5.4 A facade root has not been set
body: <p>This error is driving me crazy. 
  I had Laravel 5.2, then I upgraded to 5.3 and then 5.4 then this error started to appear.
  I have searched everywhere on Google and here in SO but none of the solutions is working on my case. Any idea what to do?</p>
  
  <p><a href="https://i.stack.imgur.com/ZAb16.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ZAb16.png" alt="enter image description here"></a></p>