'LazyData' is specified without a 'data' directory
Package vignette with placeholder title 'Vignette Title':
  'datadigest.Rmd'
'LazyData' is specified without a 'data' directory
Package vignette with placeholder title ‘Vignette Title’:
  ‘datadigest.Rmd’
Namespace in Imports field not imported from: ‘miniUI’
  All declared Imports should be used.
'LazyData' is specified without a 'data' directory
Namespace in Imports field not imported from: ‘miniUI’
  All declared Imports should be used.
'LazyData' is specified without a 'data' directory
'LazyData' is specified without a 'data' directory
Package vignette with placeholder title 'Vignette Title':
  'datadigest.Rmd'
'LazyData' is specified without a 'data' directory
Package vignette with placeholder title ‘Vignette Title’:
  ‘datadigest.Rmd’
'LazyData' is specified without a 'data' directory
Package vignette with placeholder title ‘Vignette Title’:
  ‘datadigest.Rmd’
Namespace in Imports field not imported from: ‘miniUI’
  All declared Imports should be used.
'LazyData' is specified without a 'data' directory
Namespace in Imports field not imported from: ‘miniUI’
  All declared Imports should be used.
'LazyData' is specified without a 'data' directory
'LazyData' is specified without a 'data' directory
Package vignette with placeholder title 'Vignette Title':
  'datadigest.Rmd'
Namespace in Imports field not imported from: ‘miniUI’
  All declared Imports should be used.
'LazyData' is specified without a 'data' directory
Namespace in Imports field not imported from: ‘miniUI’
  All declared Imports should be used.
'LazyData' is specified without a 'data' directory
'LazyData' is specified without a 'data' directory
Package vignette with placeholder title 'Vignette Title':
  'datadigest.Rmd'
Error(s) in re-building vignettes:
--- re-building 'datadigest.Rmd' using rmarkdown
Error: processing vignette 'datadigest.Rmd' failed with diagnostics:
only `math_method = 'mathjax'` is supported with earlier version than Pandoc 2.0 
--- failed re-building 'datadigest.Rmd'

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

Error: Vignette re-building failed.
Execution halted