Facing errors in optional lab

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

Hi everyone,
When I run The optional lab’s codes I face such this Errors:
NameError Traceback (most recent call last)
in
----> 1 plot_cost_i_w(X_train, y_train, hist)

NameError: name ‘plot_cost_i_w’ is not defined

and I can’t see the plots and results. What is the problem and how can I solve that?
Thanks

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2

Hello @M_Rezaeemanesh
You need to run all the cells before this cell from beginning.

3

Hello,
Thank you so much