GGuuu

> Where did you get the "01_data_prepare.ipnyb'? I think that is 'prepare_data.ipynb' in 'experiments' folder I could make file from that file

### I finally solved this problem❗ Following [this link](https://stackoverflow.com/questions/8756828/visual-studio-command-prompt-gives-common-was-unexpected-at-this-time), this error occurs when quotation mark(**"**) exists in your `PATH`! When I run `echo %PATH%` on cmd, I found quotation mark...