Error(s) in re-building vignettes:
  ...
--- re-building ‘basic_usage.Rmd’ using rmarkdown
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--- finished re-building ‘basic_usage.Rmd’

--- re-building ‘data_formatting.Rmd’ using rmarkdown
Quitting from lines 56-57 (data_formatting.Rmd) 
Error: processing vignette ‘data_formatting.Rmd’ failed with diagnostics:
select_columns is/are not in data. Please check data and spelling.
--- failed re-building ‘data_formatting.Rmd’

--- re-building ‘interactions.Rmd’ using rmarkdown
Running Model...
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--- finished re-building ‘interactions.Rmd’

--- re-building ‘mnl_models.Rmd’ using rmarkdown
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NOTE: Using user-provided starting values for this run
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--- finished re-building ‘mnl_models.Rmd’

--- re-building ‘mnl_models_weighted.Rmd’ using rmarkdown
Warning in logitr(data = cars_us, choice = "choice", obsID = "obsnum", pars = c("hev",  :
  The 'choice' argument is outdate as of v0.4.0. Use 'outcome' instead
Setting clusterID to 'obsnum' since robust == TRUE 
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Done!
Warning in logitr(data = cars_us, choice = "choice", obsID = "obsnum", pars = c("hev",  :
  The 'choice' argument is outdate as of v0.4.0. Use 'outcome' instead
Setting clusterID to 'obsnum' since robust == TRUE 
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--- finished re-building ‘mnl_models_weighted.Rmd’

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

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

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

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

Error: Vignette re-building failed.
Execution halted