Error(s) in re-building vignettes:
--- re-building ‘fullmatch-vignette.Rmd’ using rmarkdown
Loading required package: survival
The optmatch package has an academic license. Enter relaxinfo() for more information.
Loading required package: SparseM

Attaching package: 'SparseM'

The following object is masked from 'package:base':

    backsolve

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

--- re-building ‘matching-from-foreign-software.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 'matching-from-foreign-software.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘matching-from-foreign-software.Rmd’

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

SUMMARY: processing the following files failed:
  ‘fullmatch-vignette.Rmd’ ‘matching-from-foreign-software.Rmd’
  ‘matching-within-subgroups.Rmd’

Error: Vignette re-building failed.
Execution halted