Thanks Sam. I was knitting rmarkdown and I tried to run the document as well and these appears: from the console:
Listening on http://127.0.0.1:3036
stat_bin() using bins = 30. Pick better value with
binwidth.
Warning: Removed 2 rows containing missing values (geom_bar).
from the markdown: Error: unexpected symbol in "rmarkdown::run('C:/Users/DELL/Desktop/mommy's school/UNC/_43f5c1b4ef8358a74933caeb1853e914_sampling_distributions_Coursera.rmd', shiny_args = list(launch.browser = FALSE), auto_reload = FALSE"
Execution halted
I uploaded the latest versions for the R and RStudio.