Error(s) in re-building vignettes:
  ...
--- re-building ‘FAQs.Rmd’ using rmarkdown
Loading required package: emmeans
--- finished re-building ‘FAQs.Rmd’

--- re-building ‘basics.Rmd’ using rmarkdown
Loading required package: emmeans
Quitting from lines 291-293 (basics.Rmd) 
Error: processing vignette 'basics.Rmd' failed with diagnostics:
VECTOR_ELT() can only be applied to a 'list', not a 'double'
--- failed re-building ‘basics.Rmd’

--- re-building ‘comparisons.Rmd’ using rmarkdown
Loading required package: emmeans
Quitting from lines 58-59 (comparisons.Rmd) 
Error: processing vignette 'comparisons.Rmd' failed with diagnostics:
VECTOR_ELT() can only be applied to a 'list', not a 'double'
--- failed re-building ‘comparisons.Rmd’

--- re-building ‘confidence-intervals.Rmd’ using rmarkdown
Loading required package: emmeans
--- finished re-building ‘confidence-intervals.Rmd’

--- re-building ‘interactions.Rmd’ using rmarkdown
Loading required package: emmeans
Quitting from lines 72-73 (interactions.Rmd) 
Error: processing vignette 'interactions.Rmd' failed with diagnostics:
VECTOR_ELT() can only be applied to a 'list', not a 'double'
--- failed re-building ‘interactions.Rmd’

--- re-building ‘messy-data.Rmd’ using rmarkdown
Loading required package: emmeans
Quitting from lines 114-115 (messy-data.Rmd) 
Error: processing vignette 'messy-data.Rmd' failed with diagnostics:
VECTOR_ELT() can only be applied to a 'list', not a 'double'
--- failed re-building ‘messy-data.Rmd’

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

--- re-building ‘sophisticated.Rmd’ using rmarkdown
Loading required package: emmeans
Quitting from lines 310-311 (sophisticated.Rmd) 
Error: processing vignette 'sophisticated.Rmd' failed with diagnostics:
VECTOR_ELT() can only be applied to a 'list', not a 'double'
--- failed re-building ‘sophisticated.Rmd’

--- re-building ‘transformations.Rmd’ using rmarkdown
Loading required package: emmeans
Quitting from lines 188-189 (transformations.Rmd) 
Error: processing vignette 'transformations.Rmd' failed with diagnostics:
VECTOR_ELT() can only be applied to a 'list', not a 'double'
--- failed re-building ‘transformations.Rmd’

--- re-building ‘transition-from-lsmeans.Rmd’ using rmarkdown
Loading required package: emmeans
--- finished re-building ‘transition-from-lsmeans.Rmd’

--- re-building ‘utilities.Rmd’ using rmarkdown
Loading required package: emmeans
--- 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
--- finished re-building ‘xtending.Rmd’

SUMMARY: processing the following files failed:
  ‘basics.Rmd’ ‘comparisons.Rmd’ ‘interactions.Rmd’ ‘messy-data.Rmd’
  ‘sophisticated.Rmd’ ‘transformations.Rmd’

Error: Vignette re-building failed.
Execution halted