Package openxlsx not installed when running "output/data_clean.rds"

When I ran "make output/data_clean.rds" I got this error:

Rscript code/00_clean_data.R
Error in library(openxlsx) : there is no package called ‘openxlsx’
Execution halted
make: *** [output/data_clean.rds] Error 1

Seems like the code does not install the needed package. I will install the package and try this again.

