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

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

--- re-building ‘introduction_eventstudy.Rmd’ using rmarkdown
Loading required package: ggplot2
Files are generated.
Parsed with column specification:
cols(
  X1 = col_double(),
  X2 = col_character(),
  X3 = col_character(),
  X4 = col_character(),
  X5 = col_character(),
  X6 = col_double(),
  X7 = col_double(),
  X8 = col_double(),
  X9 = col_double()
)
Parsed with column specification:
cols(
  X1 = col_character(),
  X2 = col_character(),
  X3 = col_double()
)
Parsed with column specification:
cols(
  X1 = col_character(),
  X2 = col_character(),
  X3 = col_double()
)
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_eventstudy.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘introduction_eventstudy.Rmd’

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

SUMMARY: processing the following files failed:
  ‘addin_eventstudy.Rmd’ ‘howto_eventstudy.Rmd’
  ‘introduction_eventstudy.Rmd’ ‘parameters_eventstudy.Rmd’

Error: Vignette re-building failed.
Execution halted