How to plot mnist of kaggle data?

General Usage
1

whenever i try to plot mnist dataset it plot tilt… why? 28 * 28 pixel I’m reshape

Screenshot from 2021-01-29 20-53-46
Screenshot from 2021-01-29 20-53-461366×768 114 KB

here my code link
https://drive.google.com/file/d/1qH4rKO3LbgB4L1lMqHBBr4NmTXurDV2B/view?usp=sharing