Error(s) in re-building vignettes:
--- re-building ‘Frank2018.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 'Frank2018.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘Frank2018.Rmd’

--- re-building ‘Honda2019.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 'Honda2019.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘Honda2019.Rmd’

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

--- re-building ‘Pearce2017.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 'Pearce2017.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘Pearce2017.Rmd’

--- re-building ‘Ring_2017_vignette01_subpopulations.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 'Ring_2017_vignette01_subpopulations.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘Ring_2017_vignette01_subpopulations.Rmd’

--- re-building ‘Ring_2017_vignette02_evalmodelsubpop.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 'Ring_2017_vignette02_evalmodelsubpop.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘Ring_2017_vignette02_evalmodelsubpop.Rmd’

--- re-building ‘Ring_2017_vignette03_paper_fig2.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 'Ring_2017_vignette03_paper_fig2.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘Ring_2017_vignette03_paper_fig2.Rmd’

--- re-building ‘Ring_2017_vignette04_paper_fig3.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 'Ring_2017_vignette04_paper_fig3.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘Ring_2017_vignette04_paper_fig3.Rmd’

--- re-building ‘Ring_2017_vignette05b_plothowgatejohnson.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 'Ring_2017_vignette05b_plothowgatejohnson.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘Ring_2017_vignette05b_plothowgatejohnson.Rmd’

--- re-building ‘Ring_2017_vignette06_aerplotting.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 'Ring_2017_vignette06_aerplotting.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘Ring_2017_vignette06_aerplotting.Rmd’

--- re-building ‘Ring_2017_vignette_05a_virtualstudypops.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 'Ring_2017_vignette_05a_virtualstudypops.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘Ring_2017_vignette_05a_virtualstudypops.Rmd’

--- re-building ‘Wambaugh2018.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 'Wambaugh2018.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘Wambaugh2018.Rmd’

--- re-building ‘Wambaugh2019.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 'Wambaugh2019.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘Wambaugh2019.Rmd’

SUMMARY: processing the following files failed:
  ‘Frank2018.Rmd’ ‘Honda2019.Rmd’ ‘LinakisSubmitted.Rmd’
  ‘Pearce2017.Rmd’ ‘Ring_2017_vignette01_subpopulations.Rmd’
  ‘Ring_2017_vignette02_evalmodelsubpop.Rmd’
  ‘Ring_2017_vignette03_paper_fig2.Rmd’
  ‘Ring_2017_vignette04_paper_fig3.Rmd’
  ‘Ring_2017_vignette05b_plothowgatejohnson.Rmd’
  ‘Ring_2017_vignette06_aerplotting.Rmd’
  ‘Ring_2017_vignette_05a_virtualstudypops.Rmd’ ‘Wambaugh2018.Rmd’
  ‘Wambaugh2019.Rmd’

Error: Vignette re-building failed.
Execution halted