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

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

Quitting from lines 117-128 [convert_to_list] (ggfan_stan.Rmd)
Error: processing vignette 'ggfan_stan.Rmd' failed with diagnostics:
could not find function "ggplot"
--- failed re-building ‘ggfan_stan.Rmd’

SUMMARY: processing the following file failed:
  ‘ggfan_stan.Rmd’

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
  ...
--- re-building ‘geom_fan.Rmd’ using rmarkdown
--- finished re-building ‘geom_fan.Rmd’

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

Quitting from lines 117-128 [convert_to_list] (ggfan_stan.Rmd)
Error: processing vignette 'ggfan_stan.Rmd' failed with diagnostics:
could not find function "ggplot"
--- failed re-building ‘ggfan_stan.Rmd’

SUMMARY: processing the following file failed:
  ‘ggfan_stan.Rmd’

Error: Vignette re-building failed.
Execution halted
Namespaces in Imports field not imported from:
  ‘colorspace’ ‘grid’ ‘rstan’
  All declared Imports should be used.
Error(s) in re-building vignettes:
--- re-building ‘geom_fan.Rmd’ using rmarkdown
--- finished re-building ‘geom_fan.Rmd’

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

Quitting from lines 117-128 [convert_to_list] (ggfan_stan.Rmd)
Error: processing vignette 'ggfan_stan.Rmd' failed with diagnostics:
could not find function "ggplot"
--- failed re-building ‘ggfan_stan.Rmd’

SUMMARY: processing the following file failed:
  ‘ggfan_stan.Rmd’

Error: Vignette re-building failed.
Execution halted
Namespaces in Imports field not imported from:
  ‘colorspace’ ‘grid’ ‘rstan’
  All declared Imports should be used.
Error(s) in re-building vignettes:
--- re-building ‘geom_fan.Rmd’ using rmarkdown
--- finished re-building ‘geom_fan.Rmd’

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

Quitting from lines 117-128 [convert_to_list] (ggfan_stan.Rmd)
Error: processing vignette 'ggfan_stan.Rmd' failed with diagnostics:
could not find function "ggplot"
--- failed re-building ‘ggfan_stan.Rmd’

SUMMARY: processing the following file failed:
  ‘ggfan_stan.Rmd’

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
--- re-building 'geom_fan.Rmd' using rmarkdown
--- finished re-building 'geom_fan.Rmd'

--- re-building 'ggfan_stan.Rmd' using rmarkdown

Quitting from lines 117-128 [convert_to_list] (ggfan_stan.Rmd)
Error: processing vignette 'ggfan_stan.Rmd' failed with diagnostics:
could not find function "ggplot"
--- failed re-building 'ggfan_stan.Rmd'

SUMMARY: processing the following file failed:
  'ggfan_stan.Rmd'

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
  ...
--- re-building ‘geom_fan.Rmd’ using rmarkdown
--- finished re-building ‘geom_fan.Rmd’

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

Quitting from lines 117-128 [convert_to_list] (ggfan_stan.Rmd)
Error: processing vignette 'ggfan_stan.Rmd' failed with diagnostics:
could not find function "ggplot"
--- failed re-building ‘ggfan_stan.Rmd’

SUMMARY: processing the following file failed:
  ‘ggfan_stan.Rmd’

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
  ...
--- re-building ‘geom_fan.Rmd’ using rmarkdown
--- finished re-building ‘geom_fan.Rmd’

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

Quitting from lines 117-128 [convert_to_list] (ggfan_stan.Rmd)
Error: processing vignette 'ggfan_stan.Rmd' failed with diagnostics:
could not find function "ggplot"
--- failed re-building ‘ggfan_stan.Rmd’

SUMMARY: processing the following file failed:
  ‘ggfan_stan.Rmd’

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
--- re-building 'geom_fan.Rmd' using rmarkdown
--- finished re-building 'geom_fan.Rmd'

--- re-building 'ggfan_stan.Rmd' using rmarkdown

Quitting from lines 117-128 [convert_to_list] (ggfan_stan.Rmd)
Error: processing vignette 'ggfan_stan.Rmd' failed with diagnostics:
could not find function "ggplot"
--- failed re-building 'ggfan_stan.Rmd'

SUMMARY: processing the following file failed:
  'ggfan_stan.Rmd'

Error: Vignette re-building failed.
Execution halted
Namespaces in Imports field not imported from:
  ‘colorspace’ ‘grid’ ‘rstan’
  All declared Imports should be used.
Namespaces in Imports field not imported from:
  ‘colorspace’ ‘grid’ ‘rstan’
  All declared Imports should be used.
Error(s) in re-building vignettes:
--- re-building 'geom_fan.Rmd' using rmarkdown
--- finished re-building 'geom_fan.Rmd'

--- re-building 'ggfan_stan.Rmd' using rmarkdown

Quitting from lines 117-128 [convert_to_list] (ggfan_stan.Rmd)
Error: processing vignette 'ggfan_stan.Rmd' failed with diagnostics:
could not find function "ggplot"
--- failed re-building 'ggfan_stan.Rmd'

SUMMARY: processing the following file failed:
  'ggfan_stan.Rmd'

Error: Vignette re-building failed.
Execution halted