Two possibilities library(readr) has not been run and read_delim hasn't been called with readr::read_delim.
Putting failing code into a reprex will help. See the FAQ: How to do a minimal reproducible example reprex for beginners.
Two possibilities library(readr) has not been run and read_delim hasn't been called with readr::read_delim.
Putting failing code into a reprex will help. See the FAQ: How to do a minimal reproducible example reprex for beginners.