Error(s) in re-building vignettes:
  ...
--- re-building ‘Case_studies_Valcu_et_al_2012.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.
Loading required package: rangeMapper
rangeMapper 2.0.0
Loading required package: sf
Linking to GEOS 3.6.4, GDAL 2.2.4, PROJ 5.2.0
Loading required package: data.table
Loading required package: glue
Loading required package: ggplot2
Loading required package: viridis
Loading required package: viridisLite
 --> Making hex canvas ...done.
    (i) The canvas has 660 cells.
 --> Processing 84 ranges using 1 chunks ...done.
 --> Updating rmap_nfo & rmap_master tables ...done.
    (i) Finished in 0.828s elapsed (0.692s cpu)
Warning in CPL_transform(x, crs, aoi, pipeline, reverse) :
  GDAL Error 1: No PROJ.4 translation for source SRS, coordinate transformation initialization has failed.
Quitting from lines 61-68 (Case_studies_Valcu_et_al_2012.Rmd) 
Error: processing vignette 'Case_studies_Valcu_et_al_2012.Rmd' failed with diagnostics:
OGRCreateCoordinateTransformation() returned NULL: PROJ available?
--- failed re-building ‘Case_studies_Valcu_et_al_2012.Rmd’

--- re-building ‘rangeMapper.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.
Loading required package: rangeMapper
rangeMapper 2.0.0
Loading required package: sf
Linking to GEOS 3.6.4, GDAL 2.2.4, PROJ 5.2.0
Loading required package: data.table
Loading required package: ggplot2
Loading required package: viridis
Loading required package: viridisLite
 --> Making hex canvas ...done.
    (i) The canvas has 660 cells.
 --> Processing 84 ranges using 1 chunks ...done.
 --> Updating rmap_nfo & rmap_master tables ...done.
    (i) Finished in 0.736s elapsed (0.698s cpu)
Warning in st_centroid.sf(x) :
  st_centroid assumes attributes are constant over geometries of x
`geom_smooth()` using method = 'loess' and formula 'y ~ x'
Warning: Removed 204 rows containing non-finite values (stat_smooth).
Warning: Removed 204 rows containing missing values (geom_point).
--- finished re-building ‘rangeMapper.Rmd’

SUMMARY: processing the following file failed:
  ‘Case_studies_Valcu_et_al_2012.Rmd’

Error: Vignette re-building failed.
Execution halted