Error(s) in re-building vignettes:
--- re-building 'Intro_to_warbleR.Rmd' using rmarkdown
Loading required package: tuneR
Loading required package: seewave
Loading required package: NatureSounds
Loading required package: knitr

NOTE: functions are being renamed (run 'print(new_function_names)' to see new names). Both old and new names are available in this version 
 Please see citation('warbleR') for use in publication
Quitting from lines 1334-1337 (Intro_to_warbleR.Rmd) 
Error: processing vignette 'Intro_to_warbleR.Rmd' failed with diagnostics:
Cannot find the file(s): "microbenchmark.png"
--- failed re-building 'Intro_to_warbleR.Rmd'

--- re-building 'warbleR_workflow_01.Rmd' using rmarkdown
Loading required package: tuneR
Loading required package: seewave
Loading required package: NatureSounds
Loading required package: knitr

NOTE: functions are being renamed (run 'print(new_function_names)' to see new names). Both old and new names are available in this version 
 Please see citation('warbleR') for use in publication
--- finished re-building 'warbleR_workflow_01.Rmd'

--- re-building 'warbleR_workflow_02.Rmd' using rmarkdown
Loading required package: tuneR
Loading required package: seewave
Loading required package: NatureSounds
Loading required package: knitr

NOTE: functions are being renamed (run 'print(new_function_names)' to see new names). Both old and new names are available in this version 
 Please see citation('warbleR') for use in publication
--- finished re-building 'warbleR_workflow_02.Rmd'

--- re-building 'warbleR_workflow_03.Rmd' using rmarkdown
Loading required package: tuneR
Loading required package: seewave
Loading required package: NatureSounds
Loading required package: knitr

NOTE: functions are being renamed (run 'print(new_function_names)' to see new names). Both old and new names are available in this version 
 Please see citation('warbleR') for use in publication
--- finished re-building 'warbleR_workflow_03.Rmd'

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

Error: Vignette re-building failed.
Execution halted