Error(s) in re-building vignettes:
  ...
--- re-building ‘automation.Rmd’ using rmarkdown

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.
Quitting from lines 23-33 (automation.Rmd) 
Error: processing vignette 'automation.Rmd' failed with diagnostics:
there is no package called 'factorMerger'
--- failed re-building ‘automation.Rmd’

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

Attaching package: 'xspliner'

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

    xspline

Welcome to DALEX (version: 0.4).
Find examples and detailed introduction at: https://pbiecek.github.io/PM_VEE/
Additional features will be available after installation of: factorMerger.
Use 'install_dependencies()' to get all suggested dependencies

Attaching package: 'DALEX'

The following object is masked _by_ '.GlobalEnv':

    HR

Loading required package: lattice
Loading required package: ggplot2
Cannot extract model family. Use gaussian.
Cannot extract model link. Use identity.
Quitting from lines 37-48 (cases.Rmd) 
Error: processing vignette 'cases.Rmd' failed with diagnostics:
there is no package called 'factorMerger'
--- failed re-building ‘cases.Rmd’

--- re-building ‘discrete.Rmd’ using rmarkdown
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.
Quitting from lines 88-95 (discrete.Rmd) 
Error: processing vignette 'discrete.Rmd' failed with diagnostics:
there is no package called 'factorMerger'
--- failed re-building ‘discrete.Rmd’

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

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.
Quitting from lines 17-32 (methods.Rmd) 
Error: processing vignette 'methods.Rmd' failed with diagnostics:
there is no package called 'factorMerger'
--- failed re-building ‘methods.Rmd’

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

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 files failed:
  ‘automation.Rmd’ ‘cases.Rmd’ ‘discrete.Rmd’ ‘methods.Rmd’

Error: Vignette re-building failed.
Execution halted