Not working after?

Hello. Why doesn't it work after?

Code - https://codepen.io/anon/pen/QRLmRa
March 20th 20 at 11:43
1 answer
March 20th 20 at 11:45
Solution
https://codepen.io/anon/pen/vwBRoL
called the find all the differences
@Ilene.Schuster7 Clear. Even I get stupid. Morning. - Quinn.Wunsch commented on March 20th 20 at 11:48

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