Hi @hnam
for what I see from your traces you are using the first Method " Method 1: Python Virtual Environment with Conda". Right?
I see that your python version is 3.9 (Python\Python39 from some traces). It should be 3.7 for what described into the tutorial
conda create --name mlep-w1-lab python=3.7
Did you execute the previous statement to setup your virtual env?
How did you run the jupyter notebook? Please try to take a look to the following post
For many other learners it fixed such a kind of problem
Regards