Error(s) in re-building vignettes:
  ...
--- re-building ‘papeR_introduction.Rmd’ using rmarkdown
** Processing: graphics/fig-plot_labeled_dataframe-1.png
672x480 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 10247 bytes
Input file size = 11117 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 9068
  zc = 9  zm = 8  zs = 1  f = 0
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 9068

Output IDAT size = 9068 bytes (1179 bytes decrease)
Output file size = 9146 bytes (1971 bytes = 17.73% decrease)

** Processing: graphics/fig-grouped_plot-1.png
672x480 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 10424 bytes
Input file size = 11294 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 8889
  zc = 9  zm = 8  zs = 1  f = 0
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 8889

Output IDAT size = 8889 bytes (1535 bytes decrease)
Output file size = 8967 bytes (2327 bytes = 20.60% decrease)

** Processing: graphics/fig-with_x-1.png
672x480 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 35650 bytes
Input file size = 35776 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 28922
  zc = 9  zm = 8  zs = 1  f = 0
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 28922

Output IDAT size = 28922 bytes (6728 bytes decrease)
Output file size = 29000 bytes (6776 bytes = 18.94% decrease)

** Processing: graphics/fig-univariate_no_regressionline-1.png
672x480 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 14238 bytes
Input file size = 15108 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 12829
  zc = 9  zm = 8  zs = 1  f = 0
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 12829

Output IDAT size = 12829 bytes (1409 bytes decrease)
Output file size = 12907 bytes (2201 bytes = 14.57% decrease)

--- finished re-building ‘papeR_introduction.Rmd’

--- re-building ‘papeR_with_latex.Rnw’ using knitr
Error: processing vignette 'papeR_with_latex.Rnw' failed with diagnostics:
Running 'texi2dvi' on 'papeR_with_latex.tex' failed.
LaTeX errors:
! Undefined control sequence.
l.99 \hlkwd{library}\hldef
                          {(}\hlsng{"papeR"}\hldef{)}
? 
! Emergency stop.
! Emergency stop.
l.99 
     
End of file on the terminal!

!  ==> Fatal error occurred, no output PDF file produced!
--- failed re-building ‘papeR_with_latex.Rnw’

SUMMARY: processing the following file failed:
  ‘papeR_with_latex.Rnw’

Error: Vignette re-building failed.
Execution halted