Error(s) in re-building vignettes:
  ...
--- re-building ‘GeneralizedModels_legacy.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.
--- finished re-building ‘GeneralizedModels_legacy.Rmd’

--- re-building ‘Intro_legacy.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.
--- finished re-building ‘Intro_legacy.Rmd’

--- re-building ‘Power_legacy.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.
--- finished re-building ‘Power_legacy.Rmd’

--- re-building ‘simulation_arguments.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.
Quitting from lines 111-116 (simulation_arguments.Rmd) 
Error: processing vignette 'simulation_arguments.Rmd' failed with diagnostics:
object 'weight' not found
--- failed re-building ‘simulation_arguments.Rmd’

--- re-building ‘tidy_simulation.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.
Quitting from lines 152-167 (tidy_simulation.Rmd) 
Error: processing vignette 'tidy_simulation.Rmd' failed with diagnostics:
Can't subset columns that don't exist.
✖ Columns `weight`, `age`, and `sex` don't exist.
--- failed re-building ‘tidy_simulation.Rmd’

--- re-building ‘unbalanced_legacy.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.
--- finished re-building ‘unbalanced_legacy.Rmd’

SUMMARY: processing the following files failed:
  ‘simulation_arguments.Rmd’ ‘tidy_simulation.Rmd’

Error: Vignette re-building failed.
Execution halted