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

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

Quitting from custplot.Rmd:127-130 [unnamed-chunk-8]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error in `as.data.frame.integer()`:
! row names contain missing values
---
Backtrace:
     ▆
  1. └─sjPlot::plot_frq(efc$e42dep)
  2.   └─base::lapply(...)
  3.     └─sjPlot (local) FUN(X[[i]], ...)
  4.       └─sjPlot:::plot_frq_helper(...)
  5.         ├─base::suppressMessages(...)
  6.         │ └─base::withCallingHandlers(...)
  7.         └─sjmisc::frq(...)
  8.           └─sjmisc:::frq_helper(...)
  9.             └─base::data.frame(table(x, useNA = "always"))
 10.               ├─base::as.data.frame(x[[i]], optional = TRUE)
 11.               └─base::as.data.frame.table(x[[i]], optional = TRUE)
 12.                 ├─base::eval(ex)
 13.                 │ └─base::eval(ex)
 14.                 └─base::data.frame(...)
 15.                   ├─base::as.data.frame(x[[i]], optional = TRUE)
 16.                   └─base::as.data.frame.integer(x[[i]], optional = TRUE)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'custplot.Rmd' failed with diagnostics:
row names contain missing values
--- failed re-building 'custplot.Rmd'

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

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

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

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

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

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

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

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

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

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

SUMMARY: processing the following file failed:
  'custplot.Rmd'

Error: Vignette re-building failed.
Execution halted