Error(s) in re-building vignettes:
--- re-building ‘abfit-baseline-opts.Rmd’ using rmarkdown

Quitting from lines 11-19 [unnamed-chunk-1] (abfit-baseline-opts.Rmd)
Error: processing vignette 'abfit-baseline-opts.Rmd' failed with diagnostics:
package or namespace load failed for 'ragg' in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]):
 there is no package called 'systemfonts'
--- failed re-building ‘abfit-baseline-opts.Rmd’

--- re-building ‘spant-basis-simulation.Rmd’ using rmarkdown

Quitting from lines 11-19 [unnamed-chunk-1] (spant-basis-simulation.Rmd)
Error: processing vignette 'spant-basis-simulation.Rmd' failed with diagnostics:
package or namespace load failed for 'ragg' in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]):
 there is no package called 'systemfonts'
--- failed re-building ‘spant-basis-simulation.Rmd’

--- re-building ‘spant-intro.Rmd’ using rmarkdown

Quitting from lines 11-19 [unnamed-chunk-1] (spant-intro.Rmd)
Error: processing vignette 'spant-intro.Rmd' failed with diagnostics:
package or namespace load failed for 'ragg' in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]):
 there is no package called 'systemfonts'
--- failed re-building ‘spant-intro.Rmd’

--- re-building ‘spant-metabolite-simulation.Rmd’ using rmarkdown

Quitting from lines 11-19 [unnamed-chunk-1] (spant-metabolite-simulation.Rmd)
Error: processing vignette 'spant-metabolite-simulation.Rmd' failed with diagnostics:
package or namespace load failed for 'ragg' in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]):
 there is no package called 'systemfonts'
--- failed re-building ‘spant-metabolite-simulation.Rmd’

--- re-building ‘spant-preprocessing.Rmd’ using rmarkdown

Quitting from lines 11-19 [unnamed-chunk-1] (spant-preprocessing.Rmd)
Error: processing vignette 'spant-preprocessing.Rmd' failed with diagnostics:
package or namespace load failed for 'ragg' in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]):
 there is no package called 'systemfonts'
--- failed re-building ‘spant-preprocessing.Rmd’

SUMMARY: processing the following files failed:
  ‘abfit-baseline-opts.Rmd’ ‘spant-basis-simulation.Rmd’
  ‘spant-intro.Rmd’ ‘spant-metabolite-simulation.Rmd’
  ‘spant-preprocessing.Rmd’

Error: Vignette re-building failed.
Execution halted