Error(s) in re-building vignettes:
--- re-building 'Tutorial_Cleaning_GBIF_data_with_CoordinateCleaner.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

Quitting from lines 131-143 (Tutorial_Cleaning_GBIF_data_with_CoordinateCleaner.Rmd) 
Error: processing vignette 'Tutorial_Cleaning_GBIF_data_with_CoordinateCleaner.Rmd' failed with diagnostics:
Failed to install the rnaturalearthdata package.
 Please try installing the package for yourself using the following command: 
 install.packages("rnaturalearthdata")
--- failed re-building 'Tutorial_Cleaning_GBIF_data_with_CoordinateCleaner.Rmd'

--- re-building 'Tutorial_Cleaning_PBDB_fossils_with_CoordinateCleaner.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

Loading required package: raster
Loading required package: sp

Attaching package: 'raster'

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

    select

Loading required package: maps
trying URL 'http://packages.ropensci.org/src/contrib/rnaturalearthdata_0.2.0.tar.gz'
Content type 'application/gzip' length 3061199 bytes (2.9 MB)
====
downloaded 292 KB

Quitting from lines 117-123 (Tutorial_Cleaning_PBDB_fossils_with_CoordinateCleaner.Rmd) 
Error: processing vignette 'Tutorial_Cleaning_PBDB_fossils_with_CoordinateCleaner.Rmd' failed with diagnostics:
Failed to install the rnaturalearthdata package.
 Please try installing the package for yourself using the following command: 
 install.packages("rnaturalearthdata")
--- failed re-building 'Tutorial_Cleaning_PBDB_fossils_with_CoordinateCleaner.Rmd'

SUMMARY: processing the following files failed:
  'Tutorial_Cleaning_GBIF_data_with_CoordinateCleaner.Rmd'
  'Tutorial_Cleaning_PBDB_fossils_with_CoordinateCleaner.Rmd'

Error: Vignette re-building failed.
Execution halted