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

Quitting from getting_data_leanpub.Rmd:44-49 [unnamed-chunk-2]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error:
! Not Found (HTTP 404).
---
Backtrace:
    ▆
 1. └─leanpubr::lp_summary(slug, error = FALSE, verbose = TRUE)
 2.   └─leanpubr::lp_get_wrapper(...)
 3.     ├─base::do.call(get_results, args = L)
 4.     └─leanpubr (local) `<fn>`(error = FALSE, query = `<list>`, verbose = TRUE, url = "https://leanpub.com/biostatmethods.json")
 5.       └─httr::stop_for_status(res)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'getting_data_leanpub.Rmd' failed with diagnostics:
Not Found (HTTP 404).
--- failed re-building ‘getting_data_leanpub.Rmd’

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

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
--- re-building ‘getting_data_leanpub.Rmd’ using rmarkdown

Quitting from getting_data_leanpub.Rmd:44-49 [unnamed-chunk-2]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error:
! Not Found (HTTP 404).
---
Backtrace:
    ▆
 1. └─leanpubr::lp_summary(slug, error = FALSE, verbose = TRUE)
 2.   └─leanpubr::lp_get_wrapper(...)
 3.     ├─base::do.call(get_results, args = L)
 4.     └─leanpubr (local) `<fn>`(error = FALSE, query = `<list>`, verbose = TRUE, url = "https://leanpub.com/biostatmethods.json")
 5.       └─httr::stop_for_status(res)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'getting_data_leanpub.Rmd' failed with diagnostics:
Not Found (HTTP 404).
--- failed re-building ‘getting_data_leanpub.Rmd’

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

Error: Vignette re-building failed.
Execution halted