Error(s) in re-building vignettes:
  ...
--- re-building ‘aaa-data-frames.Rmd’ using rmarkdown

Quitting from lines 11-17 [unnamed-chunk-1] (aaa-data-frames.Rmd)
Error: processing vignette 'aaa-data-frames.Rmd' failed with diagnostics:
there is no package called 'ggplot2'
--- failed re-building ‘aaa-data-frames.Rmd’

--- re-building ‘example-challenger.Rmd’ using rmarkdown

Quitting from lines 11-18 [unnamed-chunk-1] (example-challenger.Rmd)
Error: processing vignette 'example-challenger.Rmd' failed with diagnostics:
there is no package called 'dplyr'
--- failed re-building ‘example-challenger.Rmd’

--- re-building ‘specify-colours.Rmd’ using rmarkdown

Quitting from lines 11-17 [unnamed-chunk-1] (specify-colours.Rmd)
Error: processing vignette 'specify-colours.Rmd' failed with diagnostics:
there is no package called 'ggplot2'
--- failed re-building ‘specify-colours.Rmd’

--- re-building ‘specify-columns.Rmd’ using rmarkdown

Quitting from lines 11-17 [unnamed-chunk-1] (specify-columns.Rmd)
Error: processing vignette 'specify-columns.Rmd' failed with diagnostics:
there is no package called 'ggplot2'
--- failed re-building ‘specify-columns.Rmd’

--- re-building ‘specify-rows.Rmd’ using rmarkdown

Quitting from lines 11-17 [unnamed-chunk-1] (specify-rows.Rmd)
Error: processing vignette 'specify-rows.Rmd' failed with diagnostics:
there is no package called 'ggplot2'
--- failed re-building ‘specify-rows.Rmd’

--- re-building ‘svg-animation.Rmd’ using rmarkdown

Quitting from lines 18-40 [unnamed-chunk-2] (svg-animation.Rmd)
Error: processing vignette 'svg-animation.Rmd' failed with diagnostics:
there is no package called 'dplyr'
--- failed re-building ‘svg-animation.Rmd’

--- re-building ‘sydney_rain.Rmd’ using rmarkdown

Quitting from lines 40-49 [unnamed-chunk-4] (sydney_rain.Rmd)
Error: processing vignette 'sydney_rain.Rmd' failed with diagnostics:
there is no package called 'ggplot2'
--- failed re-building ‘sydney_rain.Rmd’

SUMMARY: processing the following files failed:
  ‘aaa-data-frames.Rmd’ ‘example-challenger.Rmd’ ‘specify-colours.Rmd’
  ‘specify-columns.Rmd’ ‘specify-rows.Rmd’ ‘svg-animation.Rmd’
  ‘sydney_rain.Rmd’

Error: Vignette re-building failed.
Execution halted