Issue with Cell/after at UNQ_C7

I have problem on UNQ_C7,

Attached the error message on the cell after UNQ_C7

My LabID is: kxbuzbneldgy. I read many discussions already. Can’t solve it after many hours. Please help!!!

Hi @ivanpoon

Did you manage to solve the problem? If not, feel free to private message me your Assignment and I will take a look at it. How to download your notebook.

Cheers

solved. refresh and redo. reason unknown.