title: Cannot export Sketch file to Zeplin. Forbidden 403 Error
body: <p>I am new to both Sketch and Zeplin.</p>
  
  <p>When I am exporting my artboard by pressing cmd + E everything seems to be fine.</p>
  
  <p>Zeplin prompts me to select a project. When I select a project to export into, I get a notification saying "Exported 1 screen(s) to ProjectName".</p>
  
  <p>However a short time later it gives me a error dialog and I cannot see any screen in my Zeplin project.</p>
  
  <p>Here is the error dialog:</p>
  
  <p><a href="https://i.stack.imgur.com/dR9e8.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/dR9e8.png" alt="Request failed: forbidden (403)"></a></p>
  
  <p>Note: My sketch app is in its trial period. But it's functioning well, besides this problem.</p>