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

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

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

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

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

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

--- re-building ‘boards-s3.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 'boards-s3.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘boards-s3.Rmd’

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

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

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

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

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

SUMMARY: processing the following files failed:
  ‘boards-azure.Rmd’ ‘boards-extending.Rmd’ ‘boards-gcloud.Rmd’
  ‘boards-github.Rmd’ ‘boards-kaggle.Rmd’ ‘boards-rsconnect.Rmd’
  ‘boards-s3.Rmd’ ‘boards-understanding.Rmd’ ‘boards-websites.Rmd’
  ‘pins-extending.Rmd’ ‘pins-rstudio.Rmd’ ‘pins-starting.Rmd’

Error: Vignette re-building failed.
Execution halted