C1_W2_Linear_Regression, I've got a problem, can anyone help

Course Q&A Machine Learning Specialization Supervised ML: Regression and Classification
1

I found a problem in the final exam where whatever I do with my code, if it can succesfully run, will show that a predefined variable will be unnamed or undefined.

Any solution?
error x factor predefined (1).pdf (111.2 KB)

2

Hello,

Kindly run all the above cells.

Best,
Saif.