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

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

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

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

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

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

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

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

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

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

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

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

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

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

SUMMARY: processing the following files failed:
  ‘arc-layer.Rmd’ ‘contour-layer.Rmd’ ‘geojson-layer.Rmd’
  ‘grid-layer.Rmd’ ‘hexagon-layer.Rmd’ ‘icon-layer.Rmd’
  ‘line-layer.Rmd’ ‘path-layer.Rmd’ ‘point-cloud-layer.Rmd’
  ‘polygon-layer.Rmd’ ‘scatterplot-layer.Rmd’ ‘screen-grid-layer.Rmd’
  ‘shiny.Rmd’ ‘text-layer.Rmd’

Error: Vignette re-building failed.
Execution halted