Kindly refer to the "Code files" section of the tutorial or refer to this link - https://spoken-tutorial.org/media/videos/50/1211/resources/Working-directories-in-RStudio-Codefiles.zip

Make sure that you unzip the downloaded folder and add "CaptaincyData.csv" file in your working directory. To know your current working directory in R, use the command "getwd()".