Error(s) in re-building vignettes:
--- re-building 'c1_background_EN.Rmd' using rmarkdown
--- finished re-building 'c1_background_EN.Rmd'

--- re-building 'c1_background_ES.Rmd' using rmarkdown
--- finished re-building 'c1_background_ES.Rmd'

--- re-building 'c2_getting_started_EN.Rmd' using rmarkdown
--- finished re-building 'c2_getting_started_EN.Rmd'

--- re-building 'c2_getting_started_ES.Rmd' using rmarkdown
--- finished re-building 'c2_getting_started_ES.Rmd'

--- re-building 'c3_rasch_adults_EN.Rmd' using rmarkdown
--- finished re-building 'c3_rasch_adults_EN.Rmd'

--- re-building 'c3_rasch_adults_ES.Rmd' using rmarkdown
--- finished re-building 'c3_rasch_adults_ES.Rmd'

--- re-building 'c4_rasch_children_EN.Rmd' using rmarkdown
--- finished re-building 'c4_rasch_children_EN.Rmd'

--- re-building 'c4_rasch_children_ES.Rmd' using rmarkdown
--- finished re-building 'c4_rasch_children_ES.Rmd'

--- re-building 'c5_best_practices_EN.Rmd' using rmarkdown
--- finished re-building 'c5_best_practices_EN.Rmd'

--- re-building 'c5_best_practices_ES.Rmd' using rmarkdown
--- finished re-building 'c5_best_practices_ES.Rmd'

--- re-building 'c6_after_rasch_EN.Rmd' using rmarkdown

Quitting from lines 92-109 [table-weightedpct-example1] (c6_after_rasch_EN.Rmd)
Error: processing vignette 'c6_after_rasch_EN.Rmd' failed with diagnostics:
ℹ In argument: `prop = survey_mean(na.rm = TRUE)`.
ℹ In group 1: `disability_cat = No`, `item = EF1`, `resp = 1`.
Caused by error in `crossprod()`:
! "crossprod" is not a BUILTIN function
--- failed re-building 'c6_after_rasch_EN.Rmd'

--- re-building 'c6_after_rasch_ES.Rmd' using rmarkdown

Quitting from lines 90-107 [table-weightedpct-example1] (c6_after_rasch_ES.Rmd)
Error: processing vignette 'c6_after_rasch_ES.Rmd' failed with diagnostics:
ℹ In argument: `prop = survey_mean(na.rm = TRUE)`.
ℹ In group 1: `disability_cat = No`, `item = EF1`, `resp = 1`.
Caused by error in `crossprod()`:
! "crossprod" is not a BUILTIN function
--- failed re-building 'c6_after_rasch_ES.Rmd'

SUMMARY: processing the following files failed:
  'c6_after_rasch_EN.Rmd' 'c6_after_rasch_ES.Rmd'

Error: Vignette re-building failed.
Execution halted