Error(s) in re-building vignettes:
  ...
--- re-building ‘ggPMX-guide.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.
Warning: `mapping` is not used by stat_function()
Warning: `data` is not used by stat_function()
Warning: `mapping` is not used by stat_function()
Warning: `data` is not used by stat_function()
`geom_smooth()` using formula 'y ~ x'
`geom_smooth()` using formula 'y ~ x'
Warning: Removed 28 rows containing missing values (geom_point).
`geom_smooth()` using formula 'y ~ x'
`geom_smooth()` using formula 'y ~ x'
`geom_smooth()` using formula 'y ~ x'
Warning: Removed 8 rows containing non-finite values (stat_smooth).
Warning: Removed 8 rows containing missing values (geom_point).
Warning: `mapping` is not used by stat_function()
Warning: `data` is not used by stat_function()
Warning: `mapping` is not used by stat_function()
Warning: `data` is not used by stat_function()
Warning: `mapping` is not used by stat_function()
Warning: `data` is not used by stat_function()
Warning: `mapping` is not used by stat_function()
Warning: `data` is not used by stat_function()
Warning: `mapping` is not used by stat_function()
Warning: `data` is not used by stat_function()
Warning: `mapping` is not used by stat_function()
Warning: `data` is not used by stat_function()
Warning: `mapping` is not used by stat_function()
Warning: `data` is not used by stat_function()
`geom_smooth()` using formula 'y ~ x'
Warning: Removed 41 rows containing missing values (geom_point).
Warning: `mapping` is not used by stat_function()
Warning: `data` is not used by stat_function()
Warning: `mapping` is not used by stat_function()
Warning: `data` is not used by stat_function()
Warning: `mapping` is not used by stat_function()
Warning: `data` is not used by stat_function()
Warning: `mapping` is not used by stat_function()
Warning: `data` is not used by stat_function()
Warning: `mapping` is not used by stat_function()
Warning: `data` is not used by stat_function()
`geom_smooth()` using formula 'y ~ x'
Warning: Removed 28 rows containing missing values (geom_point).
Warning: `mapping` is not used by stat_function()
Warning: `data` is not used by stat_function()
Warning: `mapping` is not used by stat_function()
Warning: `data` is not used by stat_function()
`geom_smooth()` using formula 'y ~ x'
Warning: Removed 28 rows containing missing values (geom_point).
Warning: Removed 28 rows containing missing values (geom_point).
Warning: `mapping` is not used by stat_function()
Warning: `data` is not used by stat_function()
Scale for 'fill' is already present. Adding another scale for 'fill', which
will replace the existing scale.
`geom_smooth()` using formula 'y ~ x'
Warning: Removed 28 rows containing missing values (geom_point).
Warning: Removed 28 rows containing missing values (geom_point).
Warning: `mapping` is not used by stat_function()
Warning: `data` is not used by stat_function()
`geom_smooth()` using formula 'y ~ x'
Warning: Removed 28 rows containing missing values (geom_point).
Warning: `mapping` is not used by stat_function()
Warning: `data` is not used by stat_function()
`geom_smooth()` using formula 'y ~ x'
Warning: Removed 28 rows containing missing values (geom_point).
--- finished re-building ‘ggPMX-guide.Rmd’

--- re-building ‘ggPMX-nlmixr.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 18-20 (ggPMX-nlmixr.Rmd) 
Error: processing vignette 'ggPMX-nlmixr.Rmd' failed with diagnostics:
there is no package called 'nlmixr'
--- failed re-building ‘ggPMX-nlmixr.Rmd’

SUMMARY: processing the following file failed:
  ‘ggPMX-nlmixr.Rmd’

Error: Vignette re-building failed.
Execution halted