Do filenames matter in the first part of Lesson 2?

I’ve uploaded my .csv files to the working directory (data/DeepLearning/bears), but trying to access them through the Jupyter Notebook (the part where the program downloads and shoves the images into their respective folders via URLs) keeps spitting out an error that the program can’t find the .csv files it needs. Has anyone else run into this problem? What’s even weirder is that it doesn’t seem to be making the respective directories in the bears folder (black, grizzly, etc), leaving only the .CSV files. I’ve verified that the .CSV files do in fact exist on my own machine in the right directory, but that doesn’t seem to matter.