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

--- re-building ‘binomial.Rmd’ using rmarkdown

Attaching package: 'bayesCT'

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

    simulate

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

--- re-building ‘normal.Rmd’ using rmarkdown

Attaching package: 'bayesCT'

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

    simulate

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

--- re-building ‘time-to-event.Rmd’ using rmarkdown

Attaching package: 'bayesCT'

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

    simulate

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

SUMMARY: processing the following files failed:
  ‘bayesCT.Rmd’ ‘binomial.Rmd’ ‘normal.Rmd’ ‘time-to-event.Rmd’

Error: Vignette re-building failed.
Execution halted