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

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

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

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

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

--- re-building ‘Points-Inside-Outside-Ellipse.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 'Points-Inside-Outside-Ellipse.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘Points-Inside-Outside-Ellipse.Rmd’

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

SUMMARY: processing the following files failed:
  ‘Centroid-Vectors.Rmd’ ‘Customising-Plots-Manually.Rmd’
  ‘Ellipse-Overlap.Rmd’ ‘Introduction-to-SIBER.Rmd’
  ‘Plot-posterior-ellipses.Rmd’ ‘Points-Inside-Outside-Ellipse.Rmd’
  ‘Test-convergence.Rmd’

Error: Vignette re-building failed.
Execution halted