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Andrew EversleyAndrew Eversley 

Build the AccountList Component Trailhead Error

Hello Community, I'm working on the Trailhead project "Build a Lightning App with the Lightning Design System - "Build the AccountList Component"

I'm receiving this error as I try to verify the challenge: 

Step Not yet complete... here's what's wrong: 
The component is not using 'controller=AccountsController' 
Note: you may run into errors if you've skipped previous steps

When I completed Step 5 of the challenge "Test The App" when I did he Preview Aura gave me an error stating

"Something has gone wrong. Cannot read property 'Ud' of undefined. Please try again."

Has anyone encountered these errors, or can give any advice? 
Kiran PandiyanKiran Pandiyan
Check all the code and repaste it again from trailhead page. This might solve the problem.