Error(s) in re-building vignettes:
  ...
--- re-building ‘CRS_projections_transformations.Rmd’ using rmarkdown
Quitting from lines 330-331 (CRS_projections_transformations.Rmd) 
Error: processing vignette 'CRS_projections_transformations.Rmd' failed with diagnostics:
failure in points 1
--- failed re-building ‘CRS_projections_transformations.Rmd’

--- re-building ‘PROJ6_GDAL3.Rmd’ using rmarkdown
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs +type=crs
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum World Geodetic System 1984 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European Terrestrial Reference System 1989 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs +type=crs
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum World Geodetic System 1984 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European Terrestrial Reference System 1989 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs +type=crs
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum World Geodetic System 1984 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European Terrestrial Reference System 1989 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs +type=crs
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum World Geodetic System 1984 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European Terrestrial Reference System 1989 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs +type=crs
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum World Geodetic System 1984 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European Terrestrial Reference System 1989 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs +type=crs
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum World Geodetic System 1984 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European Terrestrial Reference System 1989 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs +type=crs
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum World Geodetic System 1984 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European Terrestrial Reference System 1989 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs +type=crs
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum World Geodetic System 1984 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European Terrestrial Reference System 1989 in CRS definition
Warning in showSRID(uprojargs, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs
Warning in showSRID(uprojargs, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum WGS_1984 in CRS definition
Warning in showSRID(uprojargs, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European_Terrestrial_Reference_System_1989 in CRS definition
Warning in showSRID(uprojargs, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs
Warning in showSRID(uprojargs, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum WGS_1984 in CRS definition
Warning in showSRID(uprojargs, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European_Terrestrial_Reference_System_1989 in CRS definition
Warning in showSRID(uprojargs, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs
Warning in showSRID(uprojargs, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum WGS_1984 in CRS definition
Warning in showSRID(uprojargs, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European_Terrestrial_Reference_System_1989 in CRS definition
Warning in showSRID(uprojargs, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs
Warning in showSRID(uprojargs, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum WGS_1984 in CRS definition
Warning in showSRID(uprojargs, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European_Terrestrial_Reference_System_1989 in CRS definition
Warning in showSRID(uprojargs, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs
Warning in showSRID(uprojargs, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum WGS_1984 in CRS definition
Warning in showSRID(uprojargs, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European_Terrestrial_Reference_System_1989 in CRS definition
Warning in showSRID(uprojargs, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs
Warning in showSRID(uprojargs, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum WGS_1984 in CRS definition
Warning in showSRID(uprojargs, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European_Terrestrial_Reference_System_1989 in CRS definition
Warning in showSRID(uprojargs, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs
Warning in showSRID(uprojargs, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum WGS_1984 in CRS definition
Warning in showSRID(uprojargs, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European_Terrestrial_Reference_System_1989 in CRS definition
Warning in showSRID(uprojargs, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs
Warning in showSRID(uprojargs, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum WGS_1984 in CRS definition
Warning in showSRID(uprojargs, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European_Terrestrial_Reference_System_1989 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs +type=crs
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum World Geodetic System 1984 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs +type=crs
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum World Geodetic System 1984 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European Terrestrial Reference System 1989 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European Terrestrial Reference System 1989 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs +type=crs
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum World Geodetic System 1984 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs +type=crs
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum World Geodetic System 1984 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European Terrestrial Reference System 1989 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European Terrestrial Reference System 1989 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs +type=crs
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum World Geodetic System 1984 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs +type=crs
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum World Geodetic System 1984 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European Terrestrial Reference System 1989 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European Terrestrial Reference System 1989 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs +type=crs
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum World Geodetic System 1984 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs +type=crs
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum World Geodetic System 1984 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European Terrestrial Reference System 1989 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European Terrestrial Reference System 1989 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs +type=crs
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum World Geodetic System 1984 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs +type=crs
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum World Geodetic System 1984 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European Terrestrial Reference System 1989 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European Terrestrial Reference System 1989 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs +type=crs
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum World Geodetic System 1984 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs +type=crs
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum World Geodetic System 1984 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European Terrestrial Reference System 1989 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European Terrestrial Reference System 1989 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs +type=crs
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum World Geodetic System 1984 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs +type=crs
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum World Geodetic System 1984 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European Terrestrial Reference System 1989 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European Terrestrial Reference System 1989 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs +type=crs
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum World Geodetic System 1984 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs +type=crs
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum World Geodetic System 1984 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European Terrestrial Reference System 1989 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European Terrestrial Reference System 1989 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs +type=crs
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum World Geodetic System 1984 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European Terrestrial Reference System 1989 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs +type=crs
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum World Geodetic System 1984 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European Terrestrial Reference System 1989 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs +type=crs
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum World Geodetic System 1984 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European Terrestrial Reference System 1989 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded ellps WGS 84 in CRS definition: +proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs +type=crs
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum World Geodetic System 1984 in CRS definition
Warning in showSRID(SRS_string, format = "PROJ", multiline = "NO", prefer_proj = prefer_proj) :
  Discarded datum European Terrestrial Reference System 1989 in CRS definition
--- finished re-building ‘PROJ6_GDAL3.Rmd’

--- re-building ‘OGR_shape_encoding.Rnw’ using Sweave
Loading required package: sp
rgdal: version: 1.5-19, (SVN revision 1092)
Geospatial Data Abstraction Library extensions to R successfully loaded
Loaded GDAL runtime: GDAL 3.2.1, released 2020/12/29
Path to GDAL shared files: /usr/share/gdal
GDAL binary built with GEOS: TRUE 
Loaded PROJ runtime: Rel. 7.2.1, January 1st, 2021, [PJ_VERSION: 721]
Path to PROJ shared files: /home/hornik/.local/share/proj:/usr/share/proj
PROJ CDN enabled: FALSE
Linking to sp version:1.4-5
To mute warnings of possible GDAL/OSR exportToProj4() degradation,
use options("rgdal_show_exportToProj4_warnings"="none") before loading rgdal.
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--- finished re-building ‘OGR_shape_encoding.Rnw’

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

Error: Vignette re-building failed.
Execution halted