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

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

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

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

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

SUMMARY: processing the following files failed:
  ‘BioMart_Examples.Rmd’ ‘Database_Retrieval.Rmd’
  ‘Functional_Annotation.Rmd’ ‘MetaGenome_Retrieval.Rmd’
  ‘Sequence_Retrieval.Rmd’

Error: Vignette re-building failed.
Execution halted