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 3.2.1     v purrr   0.3.3
v tibble  2.1.3     v dplyr   0.8.3
v tidyr   1.0.0     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 2.3.2, PROJ 5.2.0
Loading required package: rgdal
rgdal: version: 1.4-7, (SVN revision 845)
 Geospatial Data Abstraction Library extensions to R successfully loaded
 Loaded GDAL runtime: GDAL 2.3.2, released 2018/09/21
 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: 1.3-2 

Attaching package: 'GADMTools'

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

    vignette

Joining, by = "NAME_4"
! Missing number, treated as zero.
<to be read again> 
                   \protect 
l.137 ...nter}\rule{0.5\linewidth}{\linethickness}
                                                  \end{center} 

Error: processing vignette 'GADMTools_GRAPHICS.Rmd' failed with diagnostics:
Failed to compile GADMTools_GRAPHICS.tex. See https://yihui.name/tinytex/r/#debugging for debugging tips. See GADMTools_GRAPHICS.log for more info.
--- 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 3.2.1     v purrr   0.3.3
v tibble  2.1.3     v dplyr   0.8.3
v tidyr   1.0.0     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 2.3.2, PROJ 5.2.0
Loading required package: rgdal
rgdal: version: 1.4-7, (SVN revision 845)
 Geospatial Data Abstraction Library extensions to R successfully loaded
 Loaded GDAL runtime: GDAL 2.3.2, released 2018/09/21
 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: 1.3-2 

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

! Missing number, treated as zero.
<to be read again> 
                   \protect 
l.109 ...nter}\rule{0.5\linewidth}{\linethickness}
                                                  \end{center} 

Error: processing vignette 'GADMTools_ISO_3166-1_alpha-3.Rmd' failed with diagnostics:
Failed to compile GADMTools_ISO_3166-1_alpha-3.tex. See https://yihui.name/tinytex/r/#debugging for debugging tips. See GADMTools_ISO_3166-1_alpha-3.log for more info.
--- failed 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 3.2.1     v purrr   0.3.3
v tibble  2.1.3     v dplyr   0.8.3
v tidyr   1.0.0     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 2.3.2, PROJ 5.2.0
Loading required package: rgdal
rgdal: version: 1.4-7, (SVN revision 845)
 Geospatial Data Abstraction Library extensions to R successfully loaded
 Loaded GDAL runtime: GDAL 2.3.2, released 2018/09/21
 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: 1.3-2 

Attaching package: 'GADMTools'

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

    vignette

Warning: attribute variables are assumed to be spatially constant throughout all geometries
! Missing number, treated as zero.
<to be read again> 
                   \protect 
l.136 ...nter}\rule{0.5\linewidth}{\linethickness}
                                                  \end{center} 

Error: processing vignette 'GADMTools_Manipulating_Shapefiles.Rmd' failed with diagnostics:
Failed to compile GADMTools_Manipulating_Shapefiles.tex. See https://yihui.name/tinytex/r/#debugging for debugging tips. See GADMTools_Manipulating_Shapefiles.log for more info.
--- failed re-building ‘GADMTools_Manipulating_Shapefiles.Rmd’

SUMMARY: processing the following files failed:
  ‘GADMTools_GRAPHICS.Rmd’ ‘GADMTools_ISO_3166-1_alpha-3.Rmd’
  ‘GADMTools_Manipulating_Shapefiles.Rmd’

Error: Vignette re-building failed.
Execution halted