It says i have one item to complete still but i cant find it


I am hoping to get the certificate of completion but it says i still have one thing to complete. I cannot seem to find it, all videos, quizzes and labs i have watched and completed.

any help would be appreciated.

Please check course page and overview page
On course page at leftside expand all chapters
May be you missed some lesson or quiz
On overview page it will show you 26/26 completed or 25/26 completed if you missed something