Issues with Module 3 Videos and Transformer Encoder Lab

[chentianyu]

Hello,

I would like to report a few issues I encountered in Module 3:

1. Video Audio/Subtitle Mismatch
   For both the “Encoders” and “Decoders” videos, the audio and subtitles do not match the video content.

2. Lab Code Error (Section 2.4)
   In the assignment “Building a Transformer Encoder for Text Classification”, under Section 2.4, the parameters passed to PositionalEncoding seem to be swapped (d_model and max_len).

3. Lab Section Numbering
   In the same notebook, the section numbering is not consecutive (it jumps from 3.1 directly to 3.4).

Please see the attached screenshots for reference.