I'm new to R and have been getting error when trying to load "org.Dm.eg.db" despite following the instructions on http://bioconductor.org/packages/3.12/data/annotation/html/org.Dm.eg.db.html

I also have R version 4.0.5and Rstudio Version 1.4.1106 so I'm not sure what I am doing wrong.

If anyone could give me some advice on what I should do, I would greatly appreciate it!

library(org.Dm.eg.db)
Error: package or namespace load failed for ‘org.Dm.eg.db’:
 .onLoad failed in loadNamespace() for 'org.Dm.eg.db', details:
  call: l$contains
  error: $ operator is invalid for atomic vectors

This issue has been raised in the past (including just yesterday). Apparently it's specific to RStudio. See: Error: package or namespace load failed for ‘org.Mm.eg.db': for a solution. People are reporting that setting this option solves the problem: options(connectionObserver = NULL)