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

--- re-building ‘ncdfgeom.Rmd’ using rmarkdown
Linking to GEOS 3.7.2, GDAL 2.4.2, PROJ 5.2.0
── Attaching packages ─────────────────────────────────────── tidyverse 1.3.0 ──
✔ ggplot2 3.3.0     ✔ purrr   0.3.3
✔ tibble  2.1.3     ✔ dplyr   0.8.5
✔ tidyr   1.0.2     ✔ stringr 1.4.0
✔ readr   1.3.1     ✔ forcats 0.5.0
── Conflicts ────────────────────────────────────────── tidyverse_conflicts() ──
✖ dplyr::filter() masks stats::filter()
✖ dplyr::lag()    masks stats::lag()
****Support Package****
This package is a USGS-R Support package. 
see: https://owi.usgs.gov/R/packages.html#support
Warning in create.nc(nc_file, large = TRUE) :
  Argument 'large' is deprecated; please specify 'format' instead
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 'ncdfgeom.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘ncdfgeom.Rmd’

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

SUMMARY: processing the following files failed:
  ‘geometry.Rmd’ ‘ncdfgeom.Rmd’ ‘timeseries.Rmd’

Error: Vignette re-building failed.
Execution halted