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

--- re-building ‘anatomy.Rmd’ using rmarkdown
WARN [2022-07-15 21:48:25] I am a higher level log message that is very likely to be printed
--- finished re-building ‘anatomy.Rmd’

--- re-building ‘customize_logger.Rmd’ using rmarkdown
Quitting from lines 177-179 (customize_logger.Rmd) 
Error: processing vignette ‘customize_logger.Rmd’ failed with diagnostics:
number of characters is not computable in "bytes" encoding, element 1
--- failed re-building ‘customize_logger.Rmd’

--- re-building ‘migration.Rmd’ using rmarkdown
INFO [2022-07-15 21:48:29] Hello from logger in a futile.logger theme ...
WARN [2022-07-15 21:48:29] ... where the default log message formatter is sprintf
INFO [2022-07-15 21:48:29] hi there
WARN [2022-07-15 21:48:29] watch out
INFO [2022-07-15 21:48:29] hi
INFO [2022-07-15 21:48:29] hi {84/2}
INFO [2022-07-15 21:48:29] hi 42
INFO [2022-07-15 21:48:29] hi 42
INFO [2022-07-15 21:48:29] 42
INFO [2022-07-15 21:48:29] 42: 42
INFO [2022-07-15 21:48:29] 4 + 2: 6
INFO [2022-07-15 21:48:29] foo bar
INFO [2022-07-15 21:48:29] 12: 12
INFO [2022-07-15 21:48:29] 1 + 1: 2
INFO [2022-07-15 21:48:29] 2 * 2: 4
2022-07-15 21:48:30 INFO::Hello from logger in a logging theme ...
2022-07-15 21:48:30 WARN:foobar:... where the default log message formatter is sprintf
2022-07-15 21:48:30 INFO::hi there
2022-07-15 21:48:30 WARN::watch out
--- finished re-building ‘migration.Rmd’

--- re-building ‘performance.Rmd’ using rmarkdown
--- finished re-building ‘performance.Rmd’

--- re-building ‘r_packages.Rmd’ using rmarkdown
Quitting from lines 32-35 (r_packages.Rmd) 
Error: processing vignette ‘r_packages.Rmd’ failed with diagnostics:
number of characters is not computable in "bytes" encoding, element 1
--- failed re-building ‘r_packages.Rmd’

--- re-building ‘write_custom_extensions.Rmd’ using rmarkdown
--- finished re-building ‘write_custom_extensions.Rmd’

SUMMARY: processing the following files failed:
  ‘customize_logger.Rmd’ ‘r_packages.Rmd’

Error: Vignette re-building failed.
Execution halted