Error(s) in re-building vignettes:
  ...
--- re-building ‘GeneralizedModels_legacy.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.
--- finished re-building ‘GeneralizedModels_legacy.Rmd’

--- re-building ‘Intro_legacy.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.
--- finished re-building ‘Intro_legacy.Rmd’

--- re-building ‘Power_legacy.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.
Quitting from lines 53-54 (Power_legacy.Rmd) 
Error: processing vignette 'Power_legacy.Rmd' failed with diagnostics:
`levels.vctrs_list_of()` not supported.
Backtrace:
     █
  1. └─tools:::.buildOneVignette(...)
  2.   ├─base::tryCatch(...)
  3.   │ └─base:::tryCatchList(expr, classes, parentenv, handlers)
  4.   │   └─base:::tryCatchOne(expr, names, parentenv, handlers[[1L]])
  5.   │     └─base:::doTryCatch(return(expr), name, parentenv, handler)
  6.   └─engine$weave(file, quiet = quiet, encoding = enc)
  7.     └─knitr:::vweave(...)
  8.       └─(if (grepl("\\.[Rr]md$", file)) knit2html_v1 else if (grepl("\\.[Rr]rst$", ...
  9.         └─knitr::knit2html(..., force_v1 = TRUE)
 10.           └─knitr::knit(input, text = text, envir = envir, quiet = quiet)
 11.             └─knitr:::process_file(text, output)
 12.               ├─base::withCallingHandlers(...)
 13.               ├─knitr:::process_group(group)
 14.               └─knitr:::process_group.block(group)
 15.                 └─knitr:::call_block(x)
 16.                   └─knitr:::block_exec(params)
 17.                     ├─knitr:::in_dir(...)
 18.                     └─knitr:::evaluate(...)
 19.                       └─evaluate::evaluate(...)
 20.                         └─evaluate:::evaluate_call(...)
 21.                           ├─base:::handle(...)
 22.                           ├─base::withCallingHandlers(...)
 23.                           ├─base::withVisible(value_fun(ev$value, ev$visible))
 24.                           └─knitr:::value_fun(ev$value, ev$visible)
 25.                             └─knitr:::fun(x, options = options)
 26.                               ├─base::withVisible(knit_print(x, ...))
 27.                               ├─knitr::knit_print(x, ...)
 28.                               └─global::knit_print.data.frame(x, ...)
 29.                                 ├─base::paste(c("", "", kable(x, output = FALSE)), collapse = "\n")
 30.                                 └─knitr::kable(x, output = FALSE)
 31.                                   ├─knitr:::replace_na(to_character(as.matrix(x)), is.na(x))
 32.                                   ├─knitr:::to_character(as.matrix(x))
 33.                                   ├─base::as.matrix(x)
 34.                                   └─base::as.matrix.data.frame(x)
 35.                                     ├─base::levels(xj)
 36.                                     └─vctrs:::levels.vctrs_vctr(xj)
 37.                                       └─vctrs:::stop_unsupported(x, "levels")
 38.                                         └─vctrs:::stop_vctrs(...)
--- failed re-building ‘Power_legacy.Rmd’

--- re-building ‘simulation_arguments.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.
--- finished re-building ‘simulation_arguments.Rmd’

--- re-building ‘tidy_simulation.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.
--- finished re-building ‘tidy_simulation.Rmd’

--- re-building ‘unbalanced_legacy.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.
--- finished re-building ‘unbalanced_legacy.Rmd’

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

Error: Vignette re-building failed.
Execution halted