Error(s) in re-building vignettes:
  ...
--- re-building ‘GADMTools_GRAPHICS.Rmd’ using rmarkdown
Loading required package: sp
Loading required package: tidyverse
-- Attaching packages ---------------------------------- tidyverse 1.2.1 --
v ggplot2 3.1.0       v purrr   0.3.2  
v tibble  2.1.1       v dplyr   0.8.0.1
v tidyr   0.8.3       v stringr 1.4.0  
v readr   1.3.1       v forcats 0.4.0  
-- Conflicts ------------------------------------- tidyverse_conflicts() --
x dplyr::filter() masks stats::filter()
x dplyr::lag()    masks stats::lag()
Loading required package: classInt
Loading required package: sf
Linking to GEOS 3.7.1, GDAL 2.4.0, PROJ 5.2.0
Loading required package: rgdal
rgdal: version: 1.4-3, (SVN revision 828)
 Geospatial Data Abstraction Library extensions to R successfully loaded
 Loaded GDAL runtime: GDAL 2.4.0, released 2018/12/14
 Path to GDAL shared files: /usr/share/gdal
 GDAL binary built with GEOS: TRUE 
 Loaded PROJ.4 runtime: Rel. 5.2.0, September 15th, 2018, [PJ_VERSION: 520]
 Path to PROJ.4 shared files: (autodetected)
 Linking to sp version: 1.3-1 

Attaching package: 'GADMTools'

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

    vignette

Quitting from lines 68-72 (GADMTools_GRAPHICS.Rmd) 
Error: processing vignette 'GADMTools_GRAPHICS.Rmd' failed with diagnostics:
VECTOR_ELT() can only be applied to a 'list', not a 'double'
--- failed re-building ‘GADMTools_GRAPHICS.Rmd’

--- re-building ‘GADMTools_ISO_3166-1_alpha-3.Rmd’ using rmarkdown
Loading required package: sp
Loading required package: tidyverse
-- Attaching packages ---------------------------------- tidyverse 1.2.1 --
v ggplot2 3.1.0       v purrr   0.3.2  
v tibble  2.1.1       v dplyr   0.8.0.1
v tidyr   0.8.3       v stringr 1.4.0  
v readr   1.3.1       v forcats 0.4.0  
-- Conflicts ------------------------------------- tidyverse_conflicts() --
x dplyr::filter() masks stats::filter()
x dplyr::lag()    masks stats::lag()
Loading required package: classInt
Loading required package: sf
Linking to GEOS 3.7.1, GDAL 2.4.0, PROJ 5.2.0
Loading required package: rgdal
rgdal: version: 1.4-3, (SVN revision 828)
 Geospatial Data Abstraction Library extensions to R successfully loaded
 Loaded GDAL runtime: GDAL 2.4.0, released 2018/12/14
 Path to GDAL shared files: /usr/share/gdal
 GDAL binary built with GEOS: TRUE 
 Loaded PROJ.4 runtime: Rel. 5.2.0, September 15th, 2018, [PJ_VERSION: 520]
 Path to PROJ.4 shared files: (autodetected)
 Linking to sp version: 1.3-1 

Attaching package: 'GADMTools'

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

    vignette


Attaching package: 'kableExtra'

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

    group_rows

--- finished re-building ‘GADMTools_ISO_3166-1_alpha-3.Rmd’

--- re-building ‘GADMTools_Manipulating_Shapefiles.Rmd’ using rmarkdown
Loading required package: sp
Loading required package: tidyverse
-- Attaching packages ---------------------------------- tidyverse 1.2.1 --
v ggplot2 3.1.0       v purrr   0.3.2  
v tibble  2.1.1       v dplyr   0.8.0.1
v tidyr   0.8.3       v stringr 1.4.0  
v readr   1.3.1       v forcats 0.4.0  
-- Conflicts ------------------------------------- tidyverse_conflicts() --
x dplyr::filter() masks stats::filter()
x dplyr::lag()    masks stats::lag()
Loading required package: classInt
Loading required package: sf
Linking to GEOS 3.7.1, GDAL 2.4.0, PROJ 5.2.0
Loading required package: rgdal
rgdal: version: 1.4-3, (SVN revision 828)
 Geospatial Data Abstraction Library extensions to R successfully loaded
 Loaded GDAL runtime: GDAL 2.4.0, released 2018/12/14
 Path to GDAL shared files: /usr/share/gdal
 GDAL binary built with GEOS: TRUE 
 Loaded PROJ.4 runtime: Rel. 5.2.0, September 15th, 2018, [PJ_VERSION: 520]
 Path to PROJ.4 shared files: (autodetected)
 Linking to sp version: 1.3-1 

Attaching package: 'GADMTools'

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

    vignette

Quitting from lines 257-258 (GADMTools_Manipulating_Shapefiles.Rmd) 
Error: processing vignette 'GADMTools_Manipulating_Shapefiles.Rmd' failed with diagnostics:
VECTOR_ELT() can only be applied to a 'list', not a 'double'
--- failed re-building ‘GADMTools_Manipulating_Shapefiles.Rmd’

SUMMARY: processing the following files failed:
  ‘GADMTools_GRAPHICS.Rmd’ ‘GADMTools_Manipulating_Shapefiles.Rmd’

Error: Vignette re-building failed.
Execution halted