saving ipynb file with default save as is not working

[pflegende]

fine example 😊

by Alex on linkedin posted.
We found it through the HN-post.

This ist the URL of alex's notebook
https://alex-monahan.github.io/jupyterlite_duckdb_demo/notebooks/?path=magic_duckdb.ipynb

We want try to modify the example and for this downloading the whole notebook as ipynb file. Also doing this to archive it as an nice memory 😊 on this great inspiration.

But saving the file seems to fail (-> screenshot attached). Think it is our mistake. But we could not find out.

Any help is appreciated.