title: PrestaShop 1 Click Upgrade Access Denied
body: <p>Please help me in upgrading Prestashop 1.6 to 1.7 as I am new to it . When I tried  to click on "1 Click Upgrade" from admin it says "Access Denied" .</p>
  
  <p>What's the problem with it ?</p>
  
  <p>This is the screenshot : 
  <a href="https://i.stack.imgur.com/Nti2Q.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Nti2Q.png" alt="enter image description here"></a></p>