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

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

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

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

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

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

SUMMARY: processing the following files failed:
  ‘A-introduction.Rmd’ ‘B-relhaz.Rmd’ ‘C-plotting.Rmd’ ‘D-nlp.Rmd’
  ‘E-custom-inputs.Rmd’ ‘F-rsimsumtidyverse.Rmd’

Error: Vignette re-building failed.
Execution halted