Error(s) in re-building vignettes:
--- re-building ‘V01_get_started.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.
Error: processing vignette 'V01_get_started.Rmd' failed with diagnostics:
there is no package called 'stringi'
--- failed re-building ‘V01_get_started.Rmd’

--- re-building ‘V02.1_param_optim.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.
Error: processing vignette 'V02.1_param_optim.Rmd' failed with diagnostics:
there is no package called 'stringi'
--- failed re-building ‘V02.1_param_optim.Rmd’

--- re-building ‘V02.2_param_mcmc.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.
Error: processing vignette 'V02.2_param_mcmc.Rmd' failed with diagnostics:
there is no package called 'stringi'
--- failed re-building ‘V02.2_param_mcmc.Rmd’

--- re-building ‘V03_param_sets_GR4J.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.
Error: processing vignette 'V03_param_sets_GR4J.Rmd' failed with diagnostics:
there is no package called 'stringi'
--- failed re-building ‘V03_param_sets_GR4J.Rmd’

--- re-building ‘V04_cemaneige_hysteresis.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.
Error: processing vignette 'V04_cemaneige_hysteresis.Rmd' failed with diagnostics:
there is no package called 'stringi'
--- failed re-building ‘V04_cemaneige_hysteresis.Rmd’

SUMMARY: processing the following files failed:
  ‘V01_get_started.Rmd’ ‘V02.1_param_optim.Rmd’ ‘V02.2_param_mcmc.Rmd’
  ‘V03_param_sets_GR4J.Rmd’ ‘V04_cemaneige_hysteresis.Rmd’

Error: Vignette re-building failed.
Execution halted