Package suggested but not available for checking: 'flow'
Error(s) in re-building vignettes:
  ...
--- re-building 'how-boomer-works.Rmd' using rmarkdown
Quitting from lines 67-68 (how-boomer-works.Rmd) 
Error: processing vignette 'how-boomer-works.Rmd' failed with diagnostics:
there is no package called 'flow'
--- failed re-building 'how-boomer-works.Rmd'

--- re-building 'shiny.Rmd' using rmarkdown
--- finished re-building 'shiny.Rmd'

SUMMARY: processing the following file failed:
  'how-boomer-works.Rmd'

Error: Vignette re-building failed.
Execution halted
Package suggested but not available for checking: ‘flow’
Error(s) in re-building vignettes:
  ...
--- re-building ‘how-boomer-works.Rmd’ using rmarkdown
Quitting from lines 67-68 (how-boomer-works.Rmd) 
Error: processing vignette ‘how-boomer-works.Rmd’ failed with diagnostics:
there is no package called 'flow'
--- failed re-building ‘how-boomer-works.Rmd’

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

SUMMARY: processing the following file failed:
  ‘how-boomer-works.Rmd’

Error: Vignette re-building failed.
Execution halted
Package suggested but not available for checking: ‘flow’
Error(s) in re-building vignettes:
--- re-building ‘how-boomer-works.Rmd’ using rmarkdown
Quitting from lines 67-68 (how-boomer-works.Rmd) 
Error: processing vignette 'how-boomer-works.Rmd' failed with diagnostics:
there is no package called 'flow'
--- failed re-building ‘how-boomer-works.Rmd’

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

SUMMARY: processing the following file failed:
  ‘how-boomer-works.Rmd’

Error: Vignette re-building failed.
Execution halted
Package suggested but not available for checking: ‘flow’
Error(s) in re-building vignettes:
--- re-building ‘how-boomer-works.Rmd’ using rmarkdown
Quitting from lines 67-68 (how-boomer-works.Rmd) 
Error: processing vignette 'how-boomer-works.Rmd' failed with diagnostics:
there is no package called 'flow'
--- failed re-building ‘how-boomer-works.Rmd’

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

SUMMARY: processing the following file failed:
  ‘how-boomer-works.Rmd’

Error: Vignette re-building failed.
Execution halted
Package suggested but not available for checking: ‘flow’
Error(s) in re-building vignettes:
  ...
--- re-building ‘how-boomer-works.Rmd’ using rmarkdown
Quitting from lines 67-68 (how-boomer-works.Rmd) 
Error: processing vignette ‘how-boomer-works.Rmd’ failed with diagnostics:
there is no package called 'flow'
--- failed re-building ‘how-boomer-works.Rmd’

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

SUMMARY: processing the following file failed:
  ‘how-boomer-works.Rmd’

Error: Vignette re-building failed.
Execution halted
Package suggested but not available for checking: ‘flow’
Error(s) in re-building vignettes:
  ...
--- re-building ‘how-boomer-works.Rmd’ using rmarkdown
Quitting from lines 67-68 (how-boomer-works.Rmd) 
Error: processing vignette ‘how-boomer-works.Rmd’ failed with diagnostics:
there is no package called 'flow'
--- failed re-building ‘how-boomer-works.Rmd’

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

SUMMARY: processing the following file failed:
  ‘how-boomer-works.Rmd’

Error: Vignette re-building failed.
Execution halted