Error(s) in re-building vignettes:
  ...
--- re-building ‘data_package.Rmd’ using rmarkdown
[WARNING] Deprecated: --highlight-style. Use --syntax-highlighting instead.
--- finished re-building ‘data_package.Rmd’

--- re-building ‘mapping_distribution.Rmd’ using rmarkdown
[WARNING] Deprecated: --highlight-style. Use --syntax-highlighting instead.
--- finished re-building ‘mapping_distribution.Rmd’

--- re-building ‘mining_accepted_genera.Rmd’ using rmarkdown

Quitting from mining_accepted_genera.Rmd:67-79 [unnamed-chunk-4]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error in `file()`:
! cannot open the connection to 'http://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:30000909-2'
---
Backtrace:
    ▆
 1. └─expowo::powoGenera(...)
 2.   └─expowo:::.getgenURI(...)
 3.     └─base::readLines(powo_codes$uri[i], encoding = "UTF-8", warn = F)
 4.       └─base::file(con, "r")
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'mining_accepted_genera.Rmd' failed with diagnostics:
cannot open the connection to 'http://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:30000909-2'
--- failed re-building ‘mining_accepted_genera.Rmd’

--- re-building ‘mining_family_species_number.Rmd’ using rmarkdown
[WARNING] Deprecated: --highlight-style. Use --syntax-highlighting instead.
--- finished re-building ‘mining_family_species_number.Rmd’

--- re-building ‘mining_species.Rmd’ using rmarkdown
[WARNING] Deprecated: --highlight-style. Use --syntax-highlighting instead.
--- finished re-building ‘mining_species.Rmd’

--- re-building ‘mining_species_distribution.Rmd’ using rmarkdown
[WARNING] Deprecated: --highlight-style. Use --syntax-highlighting instead.
--- finished re-building ‘mining_species_distribution.Rmd’

--- re-building ‘mining_toprichest_genera.Rmd’ using rmarkdown
[WARNING] Deprecated: --highlight-style. Use --syntax-highlighting instead.
--- finished re-building ‘mining_toprichest_genera.Rmd’

--- re-building ‘plotting_discoveries.Rmd’ using rmarkdown
[WARNING] Deprecated: --highlight-style. Use --syntax-highlighting instead.
--- finished re-building ‘plotting_discoveries.Rmd’

--- re-building ‘plotting_nomenclatural_changes.Rmd’ using rmarkdown
[WARNING] Deprecated: --highlight-style. Use --syntax-highlighting instead.
--- finished re-building ‘plotting_nomenclatural_changes.Rmd’

SUMMARY: processing the following file failed:
  ‘mining_accepted_genera.Rmd’

Error: Vignette re-building failed.
Execution halted