Error(s) in re-building vignettes:
  ...
--- re-building ‘FAQs.Rmd’ using rmarkdown
Loading required package: emmeans
Welcome to emmeans.
NOTE -- Important change from versions <= 1.41:
    Indicator predictors are now treated as 2-level factors by default.
    To revert to old behavior, use emm_options(cov.keep = character(0))
--- finished re-building ‘FAQs.Rmd’

--- re-building ‘basics.Rmd’ using rmarkdown
Loading required package: emmeans
Welcome to emmeans.
NOTE -- Important change from versions <= 1.41:
    Indicator predictors are now treated as 2-level factors by default.
    To revert to old behavior, use emm_options(cov.keep = character(0))
--- finished re-building ‘basics.Rmd’

--- re-building ‘comparisons.Rmd’ using rmarkdown
Loading required package: emmeans
Welcome to emmeans.
NOTE -- Important change from versions <= 1.41:
    Indicator predictors are now treated as 2-level factors by default.
    To revert to old behavior, use emm_options(cov.keep = character(0))
--- finished re-building ‘comparisons.Rmd’

--- re-building ‘confidence-intervals.Rmd’ using rmarkdown
Loading required package: emmeans
Welcome to emmeans.
NOTE -- Important change from versions <= 1.41:
    Indicator predictors are now treated as 2-level factors by default.
    To revert to old behavior, use emm_options(cov.keep = character(0))
--- finished re-building ‘confidence-intervals.Rmd’

--- re-building ‘interactions.Rmd’ using rmarkdown
Loading required package: emmeans
Welcome to emmeans.
NOTE -- Important change from versions <= 1.41:
    Indicator predictors are now treated as 2-level factors by default.
    To revert to old behavior, use emm_options(cov.keep = character(0))
--- finished re-building ‘interactions.Rmd’

--- re-building ‘messy-data.Rmd’ using rmarkdown
Loading required package: emmeans
Welcome to emmeans.
NOTE -- Important change from versions <= 1.41:
    Indicator predictors are now treated as 2-level factors by default.
    To revert to old behavior, use emm_options(cov.keep = character(0))
Loading required package: ggplot2
Quitting from lines 53-55 (messy-data.Rmd) 
Error: processing vignette 'messy-data.Rmd' failed with diagnostics:
there is no package called 'car'
--- failed re-building ‘messy-data.Rmd’

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

--- re-building ‘predictions.Rmd’ using rmarkdown
Loading required package: emmeans
Welcome to emmeans.
NOTE -- Important change from versions <= 1.41:
    Indicator predictors are now treated as 2-level factors by default.
    To revert to old behavior, use emm_options(cov.keep = character(0))
Loading required package: lme4
Loading required package: Matrix
--- finished re-building ‘predictions.Rmd’

--- re-building ‘sophisticated.Rmd’ using rmarkdown
Loading required package: emmeans
Welcome to emmeans.
NOTE -- Important change from versions <= 1.41:
    Indicator predictors are now treated as 2-level factors by default.
    To revert to old behavior, use emm_options(cov.keep = character(0))
--- finished re-building ‘sophisticated.Rmd’

--- re-building ‘transformations.Rmd’ using rmarkdown
Loading required package: emmeans
Welcome to emmeans.
NOTE -- Important change from versions <= 1.41:
    Indicator predictors are now treated as 2-level factors by default.
    To revert to old behavior, use emm_options(cov.keep = character(0))
Loading required package: lme4
Loading required package: Matrix
[WARNING] Duplicate identifier 'regrid' at line 185 column 1
--- finished re-building ‘transformations.Rmd’

--- re-building ‘utilities.Rmd’ using rmarkdown
Loading required package: emmeans
Welcome to emmeans.
NOTE -- Important change from versions <= 1.41:
    Indicator predictors are now treated as 2-level factors by default.
    To revert to old behavior, use emm_options(cov.keep = character(0))
--- finished re-building ‘utilities.Rmd’

--- re-building ‘vignette-topics.Rmd’ using rmarkdown
--- finished re-building ‘vignette-topics.Rmd’

--- re-building ‘xtending.Rmd’ using rmarkdown
Loading required package: emmeans
Welcome to emmeans.
NOTE -- Important change from versions <= 1.41:
    Indicator predictors are now treated as 2-level factors by default.
    To revert to old behavior, use emm_options(cov.keep = character(0))
--- finished re-building ‘xtending.Rmd’

SUMMARY: processing the following file failed:
  ‘messy-data.Rmd’

Error: Vignette re-building failed.
Execution halted