One of the preloaded cells gets an error when I run it:
retrieve (query: str, top_k: int)
also is there a mini course so I can learn how to use the lab properly?
I am not a mentor for that course, but from the error message, I would guess that you have changed the cell type from “Markdown” to “Code”.
Or, you have copied the previous Markdown cell and copied it into your notebook as a Code cell.