Namespaces in Imports field not imported from:
  ‘knitr’ ‘rmarkdown’
  All declared Imports should be used.
Namespaces in Imports field not imported from:
  ‘knitr’ ‘rmarkdown’
  All declared Imports should be used.
Namespaces in Imports field not imported from:
  ‘knitr’ ‘rmarkdown’
  All declared Imports should be used.
Namespaces in Imports field not imported from:
  ‘knitr’ ‘rmarkdown’
  All declared Imports should be used.
Namespaces in Imports field not imported from:
  ‘knitr’ ‘rmarkdown’
  All declared Imports should be used.
Namespaces in Imports field not imported from:
  ‘knitr’ ‘rmarkdown’
  All declared Imports should be used.