Error(s) in re-building vignettes:
--- re-building ‘Deterministic_sensitivity_analysis.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
Quitting from lines 232-245 (Deterministic_sensitivity_analysis.Rmd) 
Error: processing vignette 'Deterministic_sensitivity_analysis.Rmd' failed with diagnostics:
polygon edge not found
--- failed re-building ‘Deterministic_sensitivity_analysis.Rmd’

--- re-building ‘Probabilstic_sensitivity_analysis.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
Quitting from lines 241-259 (Probabilstic_sensitivity_analysis.Rmd) 
Error: processing vignette 'Probabilstic_sensitivity_analysis.Rmd' failed with diagnostics:
polygon edge not found
--- failed re-building ‘Probabilstic_sensitivity_analysis.Rmd’

--- re-building ‘Sick_sicker_age_dependent.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
Quitting from lines 121-128 (Sick_sicker_age_dependent.Rmd) 
Error: processing vignette 'Sick_sicker_age_dependent.Rmd' failed with diagnostics:
polygon edge not found
--- failed re-building ‘Sick_sicker_age_dependent.Rmd’

--- re-building ‘Simple_sick_sicker.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
Quitting from lines 99-104 (Simple_sick_sicker.Rmd) 
Error: processing vignette 'Simple_sick_sicker.Rmd' failed with diagnostics:
polygon edge not found
--- failed re-building ‘Simple_sick_sicker.Rmd’

--- re-building ‘cycle_dependent.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
Quitting from lines 236-251 (cycle_dependent.Rmd) 
Error: processing vignette 'cycle_dependent.Rmd' failed with diagnostics:
polygon edge not found
--- failed re-building ‘cycle_dependent.Rmd’

SUMMARY: processing the following files failed:
  ‘Deterministic_sensitivity_analysis.Rmd’
  ‘Probabilstic_sensitivity_analysis.Rmd’
  ‘Sick_sicker_age_dependent.Rmd’ ‘Simple_sick_sicker.Rmd’
  ‘cycle_dependent.Rmd’

Error: Vignette re-building failed.
Execution halted