Error(s) in re-building vignettes:
  ...
--- re-building ‘a01_Single_event_of_interest.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/CohortSurvival.Rcheck/vign_test/CohortSurvival/vignettes/a01_Single_event_of_interest_files/figure-html/unnamed-chunk-7-1.png
288x288 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 5693 bytes
Input file size = 6551 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 5122
  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 = 5122

Output IDAT size = 5122 bytes (571 bytes decrease)
Output file size = 5200 bytes (1351 bytes = 20.62% decrease)


Quitting from lines 71-72 [unnamed-chunk-8] (a01_Single_event_of_interest.Rmd)
Error: processing vignette 'a01_Single_event_of_interest.Rmd' failed with diagnostics:
there is no package called 'gt'
--- failed re-building ‘a01_Single_event_of_interest.Rmd’

--- re-building ‘a02_Competing_risk_survival.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/CohortSurvival.Rcheck/vign_test/CohortSurvival/vignettes/a02_Competing_risk_survival_files/figure-html/unnamed-chunk-6-1.png
288x288 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 16570 bytes
Input file size = 16672 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 12690
  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 = 12690

Output IDAT size = 12690 bytes (3880 bytes decrease)
Output file size = 12768 bytes (3904 bytes = 23.42% decrease)


Quitting from lines 78-79 [unnamed-chunk-7] (a02_Competing_risk_survival.Rmd)
Error: processing vignette 'a02_Competing_risk_survival.Rmd' failed with diagnostics:
there is no package called 'gt'
--- failed re-building ‘a02_Competing_risk_survival.Rmd’

--- re-building ‘a03_Further_survival_analyses.Rmd’ using rmarkdown
--- finished re-building ‘a03_Further_survival_analyses.Rmd’

SUMMARY: processing the following files failed:
  ‘a01_Single_event_of_interest.Rmd’ ‘a02_Competing_risk_survival.Rmd’

Error: Vignette re-building failed.
Execution halted