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

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

Quitting from lines 59-62 [setup] (demographic_turnover.Rmd)
Error: processing vignette 'demographic_turnover.Rmd' failed with diagnostics:
there is no package called 'ggplot2'
--- failed re-building ‘demographic_turnover.Rmd’

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

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

Quitting from lines 120-122 [setup] (susceptibility_matrices.Rmd)
Error: processing vignette 'susceptibility_matrices.Rmd' failed with diagnostics:
there is no package called 'dplyr'
--- failed re-building ‘susceptibility_matrices.Rmd’

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

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

Quitting from lines 53-57 [setup] (uncertainty_params.Rmd)
Error: processing vignette 'uncertainty_params.Rmd' failed with diagnostics:
there is no package called 'socialmixr'
--- failed re-building ‘uncertainty_params.Rmd’

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

Quitting from lines 53-58 [unnamed-chunk-2] (varying_contacts.Rmd)
Error: processing vignette 'varying_contacts.Rmd' failed with diagnostics:
there is no package called 'socialmixr'
--- failed re-building ‘varying_contacts.Rmd’

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

Quitting from lines 63-69 [setup] (varying_susceptibility.Rmd)
Error: processing vignette 'varying_susceptibility.Rmd' failed with diagnostics:
there is no package called 'socialmixr'
--- failed re-building ‘varying_susceptibility.Rmd’

SUMMARY: processing the following files failed:
  ‘demographic_turnover.Rmd’ ‘susceptibility_matrices.Rmd’
  ‘uncertainty_params.Rmd’ ‘varying_contacts.Rmd’
  ‘varying_susceptibility.Rmd’

Error: Vignette re-building failed.
Execution halted