Error(s) in re-building vignettes:
--- re-building ‘demo.Rmd’ using rmarkdown
Loading required package: beautier
Loading required package: beastier
Loading required package: mauricer
Loading required package: tracerer
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 'demo.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘demo.Rmd’

--- re-building ‘examples.Rmd’ using rmarkdown
Loading required package: beautier
Loading required package: beastier
Loading required package: mauricer
Loading required package: tracerer
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 'examples.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘examples.Rmd’

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

--- re-building ‘step_by_step.Rmd’ using rmarkdown
Loading required package: beautier
Loading required package: beastier
Loading required package: mauricer
Loading required package: tracerer
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 'step_by_step.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘step_by_step.Rmd’

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

SUMMARY: processing the following files failed:
  ‘demo.Rmd’ ‘examples.Rmd’ ‘nested_sampling.Rmd’ ‘step_by_step.Rmd’
  ‘tutorial.Rmd’

Error: Vignette re-building failed.
Execution halted