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

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

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

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

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

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

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

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

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

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

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

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

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

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

--- re-building ‘visits_periods.Rmd’ using rmarkdown
Could not fetch https://raw.githubusercontent.com/pharmaverse/admiral/main/inst/visit_periods/dummy_study_design.png
HttpExceptionRequest Request {
  host                 = "raw.githubusercontent.com"
  port                 = 443
  secure               = True
  requestHeaders       = []
  path                 = "/pharmaverse/admiral/main/inst/visit_periods/dummy_study_design.png"
  queryString          = ""
  method               = "GET"
  proxy                = Nothing
  rawBody              = False
  redirectCount        = 10
  responseTimeout      = ResponseTimeoutDefault
  requestVersion       = HTTP/1.1
}
 (InternalException (HandshakeFailed (Error_Protocol ("certificate has unknown CA",True,UnknownCa))))
Error: processing vignette 'visits_periods.Rmd' failed with diagnostics:
pandoc document conversion failed with error 61
--- failed re-building ‘visits_periods.Rmd’

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

Error: Vignette re-building failed.
Execution halted