Error(s) in re-building vignettes:
  ...
--- re-building ‘Coxnet.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  The vignette engine knitr::rmarkdown is not available because the rmarkdown package is not available. Did you forget to add it to Suggests in DESCRIPTION? Please see https://github.com/yihui/knitr/issues/1864 for more information.

(process:14086): Pango-WARNING **: failed to create cairo scaled font, expect ugly output. the offending font is 'Helvetica Medium 9'

(process:14086): Pango-WARNING **: font_face status is: <unknown error status>

(process:14086): Pango-WARNING **: scaled_font status is: invalid matrix (not invertible)

(process:14086): Pango-WARNING **: shaping failure, expect ugly output. shape-engine='BasicEngineFc', font='Helvetica Medium 9', text='m'
--- finished re-building ‘Coxnet.Rmd’

--- re-building ‘glmnet.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  The vignette engine knitr::rmarkdown is not available because the rmarkdown package is not available. Did you forget to add it to Suggests in DESCRIPTION? Please see https://github.com/yihui/knitr/issues/1864 for more information.
Loading required package: lars
Loaded lars 1.2

--- finished re-building ‘glmnet.Rmd’

--- re-building ‘glmnetFamily.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  The vignette engine knitr::rmarkdown is not available because the rmarkdown package is not available. Did you forget to add it to Suggests in DESCRIPTION? Please see https://github.com/yihui/knitr/issues/1864 for more information.
Loading required package: Matrix
Loaded glmnet 4.0-2
Quitting from lines 121-124 (glmnetFamily.Rmd) 
Error: processing vignette 'glmnetFamily.Rmd' failed with diagnostics:
NA/NaN/Inf in foreign function call (arg 25)
--- failed re-building ‘glmnetFamily.Rmd’

--- re-building ‘relax.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  The vignette engine knitr::rmarkdown is not available because the rmarkdown package is not available. Did you forget to add it to Suggests in DESCRIPTION? Please see https://github.com/yihui/knitr/issues/1864 for more information.
--- finished re-building ‘relax.Rmd’

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

Error: Vignette re-building failed.
Execution halted