Hello @Antonio_Ngbesu_Manze,
Would this be illustrative enough for how to add them back yourself?
https://community.deeplearning.ai/t/faq-frequently-asked-questions-for-all-mls-courses/184322/6#code-error-how-to-solve-this-error-unq_cx-wasnt-found-in-code-11
Cheers, Raymond