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

Quitting from getting_started_with_TCGAretriever.Rmd:43-57 [unnamed-chunk-1]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error in `[.data.frame`:
! undefined columns selected
---
Backtrace:
    ▆
 1. ├─base::grepl("tcga_pub$", all_studies[, "studyId"])
 2. │ └─base::is.factor(x)
 3. ├─all_studies[, "studyId"]
 4. └─base::`[.data.frame`(all_studies, , "studyId")
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'getting_started_with_TCGAretriever.Rmd' failed with diagnostics:
undefined columns selected
--- failed re-building ‘getting_started_with_TCGAretriever.Rmd’

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

Error: Vignette re-building failed.
Execution halted