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

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

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

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

--- re-building ‘ProFound-Sky_Shenanigans.Rmd’ using rmarkdown
Warning in doTryCatch(return(expr), name, parentenv, handler) :
  "grid" is not a graphical parameter
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 'ProFound-Sky_Shenanigans.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘ProFound-Sky_Shenanigans.Rmd’

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

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

SUMMARY: processing the following files failed:
  ‘ProFound-Colour.Rmd’ ‘ProFound-Complex-Fit.Rmd’
  ‘ProFound-Segim-Maps.Rmd’ ‘ProFound-Simulated-Images.Rmd’
  ‘ProFound-Sky_Shenanigans.Rmd’ ‘ProFound-Source-Finding.Rmd’
  ‘ProFound-Stack-Images.Rmd’

Error: Vignette re-building failed.
Execution halted