Error(s) in re-building vignettes:
  ...
--- re-building ‘gallery.Rmd’ using rmarkdown
Picking joint bandwidth of 6.68
Warning: Removed 250 rows containing non-finite values (stat_density_ridges).

Attaching package: 'dplyr'

The following objects are masked from 'package:stats':

    filter, lag

The following objects are masked from 'package:base':

    intersect, setdiff, setequal, union

Picking joint bandwidth of 3.16
Warning: Removed 6 rows containing non-finite values (stat_density_ridges).
Loading required package: viridisLite
Picking joint bandwidth of 3.37
Quitting from lines 128-153 (gallery.Rmd) 
Error: processing vignette 'gallery.Rmd' failed with diagnostics:
there is no package called 'DAAG'
--- failed re-building ‘gallery.Rmd’

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

Attaching package: 'ggridges'

The following object is masked from 'package:ggplot2':

    scale_discrete_manual

Picking joint bandwidth of 0.181
Picking joint bandwidth of 0.181
Picking joint bandwidth of 0.181
Picking joint bandwidth of 0.181
Picking joint bandwidth of 0.181
Picking joint bandwidth of 0.181
Picking joint bandwidth of 0.181
Picking joint bandwidth of 0.123
Picking joint bandwidth of 0.212
Picking joint bandwidth of 0.207
Loading required package: viridisLite
Picking joint bandwidth of 3.37
Picking joint bandwidth of 0.181
Picking joint bandwidth of 0.181
Picking joint bandwidth of 0.181
Picking joint bandwidth of 0.181
Picking joint bandwidth of 0.181
Picking joint bandwidth of 0.181
Picking joint bandwidth of 0.181
Picking joint bandwidth of 0.181
Picking joint bandwidth of 0.181
Picking joint bandwidth of 0.181
Picking joint bandwidth of 0.181
Picking joint bandwidth of 0.181

Attaching package: 'dplyr'

The following object is masked from 'package:gridExtra':

    combine

The following objects are masked from 'package:stats':

    filter, lag

The following objects are masked from 'package:base':

    intersect, setdiff, setequal, union

Picking joint bandwidth of 0.181
Picking joint bandwidth of 0.181
Picking joint bandwidth of 0.181
Picking joint bandwidth of 0.181
Picking joint bandwidth of 458
Picking joint bandwidth of 458
Picking joint bandwidth of 458
Picking joint bandwidth of 458
--- finished re-building ‘introduction.Rmd’

SUMMARY: processing the following file failed:
  ‘gallery.Rmd’

Error: Vignette re-building failed.
Execution halted