The running environment for generating this tutorial:

sessionInfo()
## R version 4.0.5 (2021-03-31)
## Platform: x86_64-pc-linux-gnu (64-bit)
## Running under: Red Hat Enterprise Linux 8.2 (Ootpa)
## 
## Matrix products: default
## BLAS:   /cm/shared/apps_chop/R/4.0.5/lib64/R/lib/libRblas.so
## LAPACK: /cm/shared/apps_chop/R/4.0.5/lib64/R/lib/libRlapack.so
## 
## locale:
##  [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C              
##  [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8    
##  [5] LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8   
##  [7] LC_PAPER=en_US.UTF-8       LC_NAME=C                 
##  [9] LC_ADDRESS=C               LC_TELEPHONE=C            
## [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C       
## 
## attached base packages:
## [1] stats     graphics  grDevices utils     datasets  methods   base     
## 
## loaded via a namespace (and not attached):
##  [1] digest_0.6.28   R6_2.5.1        jsonlite_1.7.2  magrittr_2.0.1 
##  [5] evaluate_0.14   stringi_1.7.5   rlang_0.4.12    jquerylib_0.1.3
##  [9] bslib_0.2.4     rmarkdown_2.7   tools_4.0.5     stringr_1.4.0  
## [13] xfun_0.22       yaml_2.2.1      fastmap_1.1.0   compiler_4.0.5 
## [17] htmltools_0.5.2 knitr_1.32      sass_0.3.1