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

--- re-building ‘tabr-chordchart.Rmd’ using rmarkdown
--- finished re-building ‘tabr-chordchart.Rmd’

--- re-building ‘tabr-chords.Rmd’ using rmarkdown
--- finished re-building ‘tabr-chords.Rmd’

--- re-building ‘tabr-engraving.Rmd’ using rmarkdown
sh: 1: lilypond: not found
sh: 1: lilypond: not found
--- finished re-building ‘tabr-engraving.Rmd’

--- re-building ‘tabr-fretboard.Rmd’ using rmarkdown
Warning: 'purrr' namespace cannot be unloaded:
  namespace 'purrr' is imported by 'tidyselect' so cannot be unloaded
--- finished re-building ‘tabr-fretboard.Rmd’

--- re-building ‘tabr-helpers.Rmd’ using rmarkdown
--- finished re-building ‘tabr-helpers.Rmd’

--- re-building ‘tabr-phrases.Rmd’ using rmarkdown
Warning in kableExtra::kable_styling(., bootstrap_options = c("striped",  :
  Please specify format in kable. kableExtra can customize either HTML or LaTeX outputs. See https://haozhu233.github.io/kableExtra/ for details.
--- finished re-building ‘tabr-phrases.Rmd’

--- re-building ‘tabr-prog-chords.Rmd’ using rmarkdown
--- finished re-building ‘tabr-prog-chords.Rmd’

--- re-building ‘tabr-prog-converters.Rmd’ using rmarkdown
Warning: Alternate bass note detected, but ignored when `guitar = TRUE`.
--- finished re-building ‘tabr-prog-converters.Rmd’

--- re-building ‘tabr-prog-music.Rmd’ using rmarkdown
--- finished re-building ‘tabr-prog-music.Rmd’

--- re-building ‘tabr-prog-noteinfo.Rmd’ using rmarkdown
--- finished re-building ‘tabr-prog-noteinfo.Rmd’

--- re-building ‘tabr-prog-notes.Rmd’ using rmarkdown
--- finished re-building ‘tabr-prog-notes.Rmd’

--- re-building ‘tabr-prog-nw.Rmd’ using rmarkdown
--- finished re-building ‘tabr-prog-nw.Rmd’

--- re-building ‘tabr-prog-scales.Rmd’ using rmarkdown
--- finished re-building ‘tabr-prog-scales.Rmd’

--- re-building ‘tabr-repeats.Rmd’ using rmarkdown
Could not fetch https://github.com/leonawicz/tabr/blob/master/data-raw/vignette-pngs/ex20.png?raw=true
HttpExceptionRequest Request {
  host                 = "github.com"
  port                 = 443
  secure               = True
  requestHeaders       = []
  path                 = "/leonawicz/tabr/blob/master/data-raw/vignette-pngs/ex20.png"
  queryString          = "?raw=true"
  method               = "GET"
  proxy                = Nothing
  rawBody              = False
  redirectCount        = 10
  responseTimeout      = ResponseTimeoutDefault
  requestVersion       = HTTP/1.1
}
 ConnectionTimeout
Error: processing vignette 'tabr-repeats.Rmd' failed with diagnostics:
pandoc document conversion failed with error 61
--- failed re-building ‘tabr-repeats.Rmd’

--- re-building ‘tabr-tracks-scores.Rmd’ using rmarkdown
--- finished re-building ‘tabr-tracks-scores.Rmd’

--- re-building ‘tabr-tunings.Rmd’ using rmarkdown
--- finished re-building ‘tabr-tunings.Rmd’

SUMMARY: processing the following file failed:
  ‘tabr-repeats.Rmd’

Error: Vignette re-building failed.
Execution halted