Extracting data in R using RedditExtracoR

Question

I've tried to extract Reddit data in R using the following:

library(RedditExtractoR)
term <- "science" 
test <- get_reddit(search_terms = term,page_threshold = 10,sort_by = "new")

(taken from Search Operators in RedditExtractoR)

However, it gives me an emtpy data frame. Any ideas?