Error(s) in re-building vignettes:
--- re-building ‘VWPre_Basic_Preprocessing.Rmd’ using rmarkdown
Loading required package: dplyr

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

This is VWPre version 1.2.3. See NEWS for important changes. 
For package information, type 'help(package="VWPre")'. 
To cite this package, type 'citation(package="VWPre")'.
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 'VWPre_Basic_Preprocessing.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘VWPre_Basic_Preprocessing.Rmd’

--- re-building ‘VWPre_Interest_Areas.Rmd’ using rmarkdown
Loading required package: dplyr

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

This is VWPre version 1.2.3. See NEWS for important changes. 
For package information, type 'help(package="VWPre")'. 
To cite this package, type 'citation(package="VWPre")'.
Warning: `data_frame()` is deprecated, use `tibble()`.
This warning is displayed once per session.
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 'VWPre_Interest_Areas.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘VWPre_Interest_Areas.Rmd’

--- re-building ‘VWPre_Message_Alignment.Rmd’ using rmarkdown
Loading required package: dplyr

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

This is VWPre version 1.2.3. See NEWS for important changes. 
For package information, type 'help(package="VWPre")'. 
To cite this package, type 'citation(package="VWPre")'.
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 'VWPre_Message_Alignment.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘VWPre_Message_Alignment.Rmd’

--- re-building ‘VWPre_Plotting.Rmd’ using rmarkdown
Loading required package: dplyr

Attaching package: 'dplyr'

The following object is masked from 'package:nlme':

    collapse

The following object is masked from 'package:gridExtra':

    combine

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

    filter, lag

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

    intersect, setdiff, setequal, union

This is VWPre version 1.2.3. See NEWS for important changes. 
For package information, type 'help(package="VWPre")'. 
To cite this package, type 'citation(package="VWPre")'.
Grand average calculated using Event means.
Grand average calculated using Event means.
Grand average calculated using Event means.
Grand average calculated using Event means.
Grand average calculated using Event means.
Grand average calculated using Event means.
Grand average calculated using Event means.
Grand average calculated using Event means.
Grand average calculated using Event means.
Grand average calculated using Subject means.
Grand average of Difference calculated using Event means.
Grand average of Difference calculated using Event means.
Grand average of difference between EN3 and CH1 calculated using Subject means.
Surface calculated using Event means.
Surface calculated using Event means.
Grand average calculated using Event means.
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 'VWPre_Plotting.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘VWPre_Plotting.Rmd’

SUMMARY: processing the following files failed:
  ‘VWPre_Basic_Preprocessing.Rmd’ ‘VWPre_Interest_Areas.Rmd’
  ‘VWPre_Message_Alignment.Rmd’ ‘VWPre_Plotting.Rmd’

Error: Vignette re-building failed.
Execution halted