I've created a PAWS notebook (https://paws.wmflabs.org/paws/user/Nettrom/notebooks/Article%20Importance%20Feasibility.ipynb) as part of our article importance project (which is further documented here: https://meta.wikimedia.org/wiki/Research:Automated_classification_of_article_importance). It is now at the stage where the underlying kernel consistently crashes during data import. As I do not know how to figure out why it crashes, I'm opening this ticket.

Note that the notebook does contain remnants of earlier work where the dataset was not imported correctly, so please ignore anything except the first two cells of R code.