Error(s) in re-building vignettes:
--- re-building ‘Details.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


Attaching package: 'gridExtra'

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

    combine

Linking to GEOS 3.7.2, GDAL 2.4.2, PROJ 5.2.0
Warning: Removed 1 row(s) containing missing values (geom_path).
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 'Details.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘Details.Rmd’

--- re-building ‘Overview.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

To enable 
caching of data, set `options(tigris_use_cache = TRUE)` in your R script or .Rprofile.

Attaching package: 'tigris'

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

    plot

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

    plot

Loading required package: sp
rgeos version: 0.5-2, (SVN revision 621)
 GEOS runtime version: 3.7.2-CAPI-1.11.2 
 Linking to sp version: 1.4-1 
 Polygon checking: TRUE 

Linking to GEOS 3.7.2, GDAL 2.4.2, PROJ 5.2.0
Loading required package: viridisLite
Warning: Removed 1 row(s) containing missing values (geom_path).
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 'Overview.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘Overview.Rmd’

SUMMARY: processing the following files failed:
  ‘Details.Rmd’ ‘Overview.Rmd’

Error: Vignette re-building failed.
Execution halted