Error(s) in re-building vignettes:
--- re-building ‘ApplyCarryToStage.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 'ApplyCarryToStage.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘ApplyCarryToStage.Rmd’

--- re-building ‘CreatingLandscapes.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 'CreatingLandscapes.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘CreatingLandscapes.Rmd’

--- re-building ‘Sexuality-and-mating.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 'Sexuality-and-mating.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘Sexuality-and-mating.Rmd’

--- re-building ‘Simulating.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 'Simulating.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘Simulating.Rmd’

--- re-building ‘rmetasim.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 'rmetasim.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘rmetasim.Rmd’

SUMMARY: processing the following files failed:
  ‘ApplyCarryToStage.Rmd’ ‘CreatingLandscapes.Rmd’
  ‘Sexuality-and-mating.Rmd’ ‘Simulating.Rmd’ ‘rmetasim.Rmd’

Error: Vignette re-building failed.
Execution halted