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

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

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

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

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

SUMMARY: processing the following files failed:
  ‘civis_ml.Rmd’ ‘civis_scripts.Rmd’ ‘concurrency.Rmd’
  ‘data_import_and_export.Rmd’ ‘quick_start.Rmd’

Error: Vignette re-building failed.
Execution halted