Error(s) in re-building vignettes:
--- re-building 'frictionless.Rmd' using rmarkdown
Quitting from lines 36-37 (frictionless.Rmd) 
Error: processing vignette 'frictionless.Rmd' failed with diagnostics:
cannot open the connection
--- failed re-building 'frictionless.Rmd'

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

Error: Vignette re-building failed.
Execution halted