Error(s) in re-building vignettes:
  ...
--- re-building ‘V01_get_started.Rmd’ using rmarkdown

Quitting from lines 36-40 [unnamed-chunk-2] (V01_get_started.Rmd)
Error: processing vignette 'V01_get_started.Rmd' failed with diagnostics:
no applicable method for 'set_units' applied to an object of class "difftime"
--- failed re-building ‘V01_get_started.Rmd’

--- re-building ‘V02_inputs_preparation_stars.Rmd’ using rmarkdown

Quitting from lines 87-89 [unnamed-chunk-6] (V02_inputs_preparation_stars.Rmd)
Error: processing vignette 'V02_inputs_preparation_stars.Rmd' failed with diagnostics:
no applicable method for 'set_units' applied to an object of class "difftime"
--- failed re-building ‘V02_inputs_preparation_stars.Rmd’

--- re-building ‘V03_inputs_preparation_whitebox.Rmd’ using rmarkdown
sh: 1: /tmp/check-CRAN-regular-hornik/data/R/whitebox/WBT/whitebox_tools: not found
trying URL 'https://www.whiteboxgeo.com/WBT_Linux/WhiteboxTools_linux_amd64.zip'
Content type 'application/zip' length 24581859 bytes (23.4 MB)
==================================================
downloaded 23.4 MB

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/transfR.Rcheck/vign_test/transfR/vignettes/V03_inputs_preparation_whitebox_files/figure-html/unnamed-chunk-7-1.png
672x384 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 54026 bytes
Input file size = 54176 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 42170
  zc = 9  zm = 8  zs = 1  f = 0
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 42170

Output IDAT size = 42170 bytes (11856 bytes decrease)
Output file size = 42248 bytes (11928 bytes = 22.02% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/transfR.Rcheck/vign_test/transfR/vignettes/V03_inputs_preparation_whitebox_files/figure-html/unnamed-chunk-9-1.png
672x384 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 51868 bytes
Input file size = 52018 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 40096
  zc = 9  zm = 8  zs = 1  f = 0
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 40096

Output IDAT size = 40096 bytes (11772 bytes decrease)
Output file size = 40174 bytes (11844 bytes = 22.77% decrease)


Quitting from lines 338-339 [unnamed-chunk-11] (V03_inputs_preparation_whitebox.Rmd)
Error: processing vignette 'V03_inputs_preparation_whitebox.Rmd' failed with diagnostics:
no applicable method for 'set_units' applied to an object of class "difftime"
--- failed re-building ‘V03_inputs_preparation_whitebox.Rmd’

SUMMARY: processing the following files failed:
  ‘V01_get_started.Rmd’ ‘V02_inputs_preparation_stars.Rmd’
  ‘V03_inputs_preparation_whitebox.Rmd’

Error: Vignette re-building failed.
Execution halted