Error(s) in re-building vignettes:
  ...
--- re-building ‘automation.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.

Attaching package: 'xspliner'

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

    xspline

randomForest 4.6-14
Type rfNews() to see new features/changes/bug fixes.
Cannot extract model family. Use gaussian.
Cannot extract model link. Use identity.
Cannot extract model family. Use gaussian.
Cannot extract model link. Use identity.
Cannot extract model family. Use gaussian.
Cannot extract model link. Use identity.
Cannot extract model family. Use gaussian.
Cannot extract model link. Use identity.
Cannot extract model family. Use gaussian.
Cannot extract model link. Use identity.
Cannot extract model family. Use gaussian.
Cannot extract model link. Use identity.
Cannot extract model family. Use gaussian.
Cannot extract model link. Use identity.
Cannot extract model family. Use gaussian.
Cannot extract model link. Use identity.
Cannot extract model family. Use gaussian.
Cannot extract model link. Use identity.
Cannot extract model family. Use gaussian.
Cannot extract model link. Use identity.
Welcome to DALEX (version: 0.4.4).
Find examples and detailed introduction at: https://pbiecek.github.io/PM_VEE/
Additional features will be available after installation of: ingredients, iBreakDown.
Use 'install_dependencies()' to get all suggested dependencies
Cannot extract model family. Use gaussian.
Cannot extract model link. Use identity.
--- finished re-building ‘automation.Rmd’

--- re-building ‘cases.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 15-32 (cases.Rmd) 
Error: processing vignette 'cases.Rmd' failed with diagnostics:
there is no package called 'xgboost'
--- failed re-building ‘cases.Rmd’

--- re-building ‘discrete.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.
randomForest 4.6-14
Type rfNews() to see new features/changes/bug fixes.

Attaching package: 'xspliner'

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

    xspline

Cannot extract model family. Use gaussian.
Cannot extract model link. Use identity.
Warning: Column `orig` joining factors with different levels, coercing to character vector
--- finished re-building ‘discrete.Rmd’

--- re-building ‘extras.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.
randomForest 4.6-14
Type rfNews() to see new features/changes/bug fixes.

Attaching package: 'xspliner'

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

    xspline

Cannot extract model family. Use gaussian.
Cannot extract model link. Use identity.
Warning in mgcv::pcls(G) :
  initial point very close to some inequality constraints
Warning in mgcv::pcls(G) :
  initial parameters very close to inequality constraints
Warning in mgcv::pcls(G) :
  initial point very close to some inequality constraints
Warning in mgcv::pcls(G) :
  initial parameters very close to inequality constraints
Warning in mgcv::pcls(G) :
  initial point very close to some inequality constraints
Warning in mgcv::pcls(G) :
  initial parameters very close to inequality constraints
Warning in mgcv::pcls(G) :
  initial point very close to some inequality constraints
Warning in mgcv::pcls(G) :
  initial parameters very close to inequality constraints
Cannot extract model family. Use gaussian.
Cannot extract model link. Use identity.
ptratio fits better than xs(ptratio). Using bare component.
Cannot extract model family. Use gaussian.
Cannot extract model link. Use identity.
Cannot extract model family. Use poisson.
Cannot extract model link. Use log.
Cannot extract model family. Use gaussian.
Cannot extract model link. Use identity.
Cannot extract model family. Use gaussian.
Cannot extract model link. Use identity.
Cannot extract model family. Use gaussian.
Cannot extract model link. Use identity.
Cannot extract model family. Use gaussian.
Cannot extract model link. Use identity.
Cannot extract model family. Use gaussian.
Cannot extract model link. Use identity.
Cannot extract model family. Use gaussian.
Cannot extract model link. Use identity.
--- finished re-building ‘extras.Rmd’

--- re-building ‘graphics.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.
randomForest 4.6-14
Type rfNews() to see new features/changes/bug fixes.

Attaching package: 'xspliner'

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

    xspline

Cannot extract model family. Use gaussian.
Cannot extract model link. Use identity.
Loading required package: nlme
This is mgcv 1.8-28. For overview type 'help("mgcv-package")'.
Cannot extract model family. Use gaussian.
Cannot extract model link. Use identity.
--- finished re-building ‘graphics.Rmd’

--- re-building ‘methods.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.

Attaching package: 'xspliner'

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

    xspline

randomForest 4.6-14
Type rfNews() to see new features/changes/bug fixes.
Cannot extract model family. Use gaussian.
Cannot extract model link. Use identity.
--- finished re-building ‘methods.Rmd’

--- re-building ‘xspliner.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.

Attaching package: 'ggplot2'

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

    margin

Cannot extract model family. Use gaussian.
Cannot extract model link. Use identity.
Cannot extract model family. Use gaussian.
Cannot extract model link. Use identity.
Cannot extract model family. Use gaussian.
Cannot extract model link. Use identity.
--- finished re-building ‘xspliner.Rmd’

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

Error: Vignette re-building failed.
Execution halted