Error(s) in re-building vignettes:
--- re-building ‘ocs-vignette.Rmd’ using rmarkdown
Error in x$.self$finalize() : attempt to apply non-function
Error in x$.self$finalize() : attempt to apply non-function
Error in x$.self$finalize() : attempt to apply non-function
Error in x$.self$finalize() : attempt to apply non-function
Error in x$.self$finalize() : attempt to apply non-function
Error in x$.self$finalize() : attempt to apply non-function
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 'ocs-vignette.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘ocs-vignette.Rmd’

--- re-building ‘ped-vignette.Rmd’ using rmarkdown
Warning in kinship2::pedigree(id = Pedig$Indiv, dadid = Pedig$Sire, momid = Pedig$Dam,  :
  More than 25% of the gender values are 'unknown'
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 'ped-vignette.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘ped-vignette.Rmd’

--- re-building ‘seg-vignette.Rmd’ using rmarkdown
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 'seg-vignette.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘seg-vignette.Rmd’

SUMMARY: processing the following files failed:
  ‘ocs-vignette.Rmd’ ‘ped-vignette.Rmd’ ‘seg-vignette.Rmd’

Error: Vignette re-building failed.
Execution halted