Error(s) in re-building vignettes:
--- re-building ‘DSR-vignette.Rmd’ using rmarkdown

Attaching package: 'dplyr'

The following objects are masked from 'package:stats':

    filter, lag

The following objects are masked from 'package:base':

    intersect, setdiff, setequal, union

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

--- re-building ‘Introduction_to_PHEindicatormethods.Rmd’ using rmarkdown

Attaching package: 'dplyr'

The following objects are masked from 'package:stats':

    filter, lag

The following objects are masked from 'package:base':

    intersect, setdiff, setequal, union

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

--- re-building ‘WorkedExamples_phe_sii.Rmd’ using rmarkdown

Attaching package: 'dplyr'

The following objects are masked from 'package:stats':

    filter, lag

The following objects are masked from 'package:base':

    intersect, setdiff, setequal, union

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

SUMMARY: processing the following files failed:
  ‘DSR-vignette.Rmd’ ‘Introduction_to_PHEindicatormethods.Rmd’
  ‘WorkedExamples_phe_sii.Rmd’

Error: Vignette re-building failed.
Execution halted