Error(s) in re-building vignettes:
--- re-building ‘Descriptives.Rmd’ using rmarkdown
Loading required package: lattice
Loading required package: survival
Loading required package: Formula
Loading required package: ggplot2

Attaching package: 'Hmisc'

The following objects are masked from 'package:base':

    format.pval, units

dyld: lazy symbol binding failed: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

Error: processing vignette 'Descriptives.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘Descriptives.Rmd’

--- re-building ‘Grid-based_flowcharts.Rmd’ using rmarkdown
Loading required package: Rcpp
Loading required package: htmlTable
dyld: lazy symbol binding failed: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

Error: processing vignette 'Grid-based_flowcharts.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘Grid-based_flowcharts.Rmd’

--- re-building ‘Transition-class.Rmd’ using rmarkdown
Loading required package: Rcpp
Loading required package: htmlTable
Fontconfig error: Cannot load default config file
dyld: lazy symbol binding failed: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

Error: processing vignette 'Transition-class.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘Transition-class.Rmd’

--- re-building ‘transitionPlot.Rmd’ using rmarkdown
Loading required package: Rcpp
Loading required package: htmlTable
Fontconfig error: Cannot load default config file
The minimum width reached and the arrow at box no. '2' to no. '1' will not be shown. This is due to the fact that the lwd will generate a falsely strong arrow.
The minimum width reached and the arrow at box no. '2' to no. '1' will not be shown. This is due to the fact that the lwd will generate a falsely strong arrow.
The minimum width reached and the arrow at box no. '3' to no. '1' will not be shown. This is due to the fact that the lwd will generate a falsely strong arrow.
The minimum width reached and the arrow at box no. '3' to no. '1' will not be shown. This is due to the fact that the lwd will generate a falsely strong arrow.
dyld: lazy symbol binding failed: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

Error: processing vignette 'transitionPlot.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘transitionPlot.Rmd’

SUMMARY: processing the following files failed:
  ‘Descriptives.Rmd’ ‘Grid-based_flowcharts.Rmd’ ‘Transition-class.Rmd’
  ‘transitionPlot.Rmd’

Error: Vignette re-building failed.
Execution halted