Problem with 'questionr' package installation

[adelebrot]

Hello, i have a problem in installing the questionr package. This error message appears when I run the librairy function :

library('questionr')
Erreur : package or namespace load failed for ‘questionr’ in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]):
aucun package nommé ‘dplyr’ n'est trouvé

I also join you the code for the install.packages function :

install.packages('questionr')
essai de l'URL 'https://cran.rstudio.com/bin/macosx/contrib/4.0/questionr_0.7.4.tgz'
Content type 'application/x-gzip' length 1910120 bytes (1.8 MB)
==================================================
downloaded 1.8 MB
The downloaded binary packages are in
/var/folders/s3/vrnqn2s56jgb1_6k1qw6pls40000gn/T//RtmpzA6z5p/downloaded_packages

Can you tell me what mistake I made and how can I fix this problem? Thank you, it would be a great help.

[jrkrideau]

Frow the error message it looks like you need to install dplyr before questionr.

Try

install.packages("dplyr")

and then

install.packages('questionr')

No error on your part. Sometimes R does not install a dependency. Who knows why?

[adelebrot]

Thank you very much, it worked!