Error(s) in re-building vignettes:
  ...
--- re-building ‘blackwhitefigures.Rmd’ using rmarkdown
Data were 'prettified'. Consider using `terms="barthel [all]"` to get smooth plots.
--- finished re-building ‘blackwhitefigures.Rmd’

--- re-building ‘custplot.Rmd’ using rmarkdown
#refugeeswelcome
Scale for 'colour' is already present. Adding another scale for 'colour',
which will replace the existing scale.
--- finished 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

Attaching package: 'dplyr'

The following objects are masked from 'package:stats':

    filter, lag

The following objects are masked from 'package:base':

    intersect, setdiff, setequal, union

Learn more about sjPlot with 'browseVignettes("sjPlot")'.
--- finished re-building ‘plot_likert_scales.Rmd’

--- re-building ‘plot_marginal_effects.Rmd’ using rmarkdown
Model has log-transformed predictors. Consider using `terms="hp [exp]"` to back-transform scale.
Model has log-transformed predictors. Consider using `terms="hp [exp]"` to back-transform scale.
--- finished re-building ‘plot_marginal_effects.Rmd’

--- re-building ‘plot_model_estimates.Rmd’ using rmarkdown
rstanarm (Version 2.19.2, packaged: 2019-10-01 20:20:33 UTC)
- Do not expect the default priors to remain the same in future rstanarm versions.
Thus, R scripts should specify priors explicitly, even if they are just the defaults.
- For execution on a local, multicore CPU with excess RAM we recommend calling
options(mc.cores = parallel::detectCores())
- bayesplot theme set to bayesplot::theme_default()
   * Does _not_ affect other ggplot2 plots
   * See ?bayesplot_theme_set for details on theme setting
--- finished re-building ‘plot_model_estimates.Rmd’

--- re-building ‘sjtitemanalysis.Rmd’ using rmarkdown
Learn more about sjPlot with 'browseVignettes("sjPlot")'.

Attaching package: 'dplyr'

The following objects are masked from 'package:stats':

    filter, lag

The following objects are masked from 'package:base':

    intersect, setdiff, setequal, union

--- finished re-building ‘sjtitemanalysis.Rmd’

--- re-building ‘tab_bayes.Rmd’ using rmarkdown
Loading required package: Rcpp
Loading 'brms' package (version 2.10.0). Useful instructions
can be found by typing help('brms'). A more detailed introduction
to the package is available through vignette('brms_overview').
--- finished re-building ‘tab_bayes.Rmd’

--- re-building ‘tab_mixed.Rmd’ using rmarkdown
Learn more about sjPlot with 'browseVignettes("sjPlot")'.
Loading required package: Matrix
Quitting from lines 79-89 (tab_mixed.Rmd) 
Error: processing vignette 'tab_mixed.Rmd' failed with diagnostics:
object ‘site’ not found
--- failed re-building ‘tab_mixed.Rmd’

--- re-building ‘tab_model_estimates.Rmd’ using rmarkdown
Classes and Methods for R developed in the
Political Science Computational Laboratory
Department of Political Science
Stanford University
Simon Jackman
hurdle and zeroinfl functions by Achim Zeileis
Length of `pred.labels` does not equal number of predictors, no labelling applied.
--- finished re-building ‘tab_model_estimates.Rmd’

--- re-building ‘table_css.Rmd’ using rmarkdown
Learn more about sjPlot with 'browseVignettes("sjPlot")'.
--- finished re-building ‘table_css.Rmd’

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

Error: Vignette re-building failed.
Execution halted