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

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

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

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

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

--- re-building ‘Simulation.Rmd’ using rmarkdown
Loading required package: ubiquity
Loading required package: deSolve
Loading required package: ggplot2
Loading required package: foreach
Loading required package: doParallel
Loading required package: iterators
Loading required package: parallel
Loading required package: rhandsontable
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 'Simulation.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘Simulation.Rmd’

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

SUMMARY: processing the following files failed:
  ‘Deployment.Rmd’ ‘Estimation.Rmd’ ‘Language.Rmd’ ‘NCA.Rmd’
  ‘Reporting.Rmd’ ‘Simulation.Rmd’ ‘Titration.Rmd’

Error: Vignette re-building failed.
Execution halted