Review of Results
Following all the steps provided on the page (https://tm4ss.github.io/docs/Tutorial_6_Topic_Models.html), I was almost able to achieve the desired outcome (unless there's a misunderstanding on my part).
According to the tutorial, each line in the "data.csv" file should ideally contain a summary of the Harry Potter book's story. This would allow us to "visualize" the overall narrative from the beginning and generate a word cloud based on the summaries.
However, as you can see, I encountered an error on the last line, and I'm unable to resolve it. Do you have any advice?

Word Cloud
Conclusion:
Thank you