Found export directive that requires package ‘methods’:
  ‘exportClasses’
Remove all such namespace directives (if obsolete) or ensure that the
DESCRIPTION Depends or Imports field contains ‘methods’.
checkRd: (-1) OU_14.Rd:15: Lost braces in \itemize; meant \describe ?
checkRd: (-1) OU_14.Rd:16: Lost braces in \itemize; meant \describe ?
checkRd: (-1) OU_14.Rd:17: Lost braces in \itemize; meant \describe ?
Found export directive that requires package ‘methods’:
  ‘exportClasses’
Remove all such namespace directives (if obsolete) or ensure that the
DESCRIPTION Depends or Imports field contains ‘methods’.
checkRd: (-1) OU_14.Rd:15: Lost braces in \itemize; meant \describe ?
checkRd: (-1) OU_14.Rd:16: Lost braces in \itemize; meant \describe ?
checkRd: (-1) OU_14.Rd:17: Lost braces in \itemize; meant \describe ?
Found export directive that requires package ‘methods’:
  ‘exportClasses’
Remove all such namespace directives (if obsolete) or ensure that the
DESCRIPTION Depends or Imports field contains ‘methods’.
Found export directive that requires package ‘methods’:
  ‘exportClasses’
Remove all such namespace directives (if obsolete) or ensure that the
DESCRIPTION Depends or Imports field contains ‘methods’.
Found export directive that requires package 'methods':
  'exportClasses'
Remove all such namespace directives (if obsolete) or ensure that the
DESCRIPTION Depends or Imports field contains 'methods'.

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

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

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

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

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

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

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

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

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

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

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

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

--- re-building ‘time_series_offset.Rmd’ using rmarkdown

Quitting from lines 68-97 [using offset] (time_series_offset.Rmd)
Error: processing vignette 'time_series_offset.Rmd' failed with diagnostics:
Problem while computing aesthetics.
ℹ Error occurred in the 1st layer.
Caused by error in `as.Date.numeric()`:
! 'origin' must be supplied
--- failed re-building ‘time_series_offset.Rmd’

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

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

Error: Vignette re-building failed.
Execution halted