jkpjkp

the figure&description in transformer.ipynb follows its historical post-norm version. Since (almost?) all modern projects uses pre-norm transformers, maybe it'd be presented head-up, not until in ViT section, to give newbies...

[Bug]: Uh oh, an error occurred! too much recursion

2

### Is there an existing issue for the same bug? - [X] I have checked the existing issues. ### Describe the bug and reproduction steps repo working on: https://github.com/Yuanpei-Intelligence/YPPF command:...