Error(s) in re-building vignettes:
--- re-building ‘allele-haplotype.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
── Attaching packages ─────────────────────────────────────── tidyverse 1.3.1 ──
✔ ggplot2 3.3.3     ✔ dplyr   1.0.6
✔ tibble  3.1.1     ✔ stringr 1.4.0
✔ tidyr   1.1.3     ✔ forcats 0.5.1
✔ purrr   0.3.4     
── Conflicts ────────────────────────────────────────── tidyverse_conflicts() ──
✖ dplyr::filter() masks stats::filter()
✖ dplyr::lag()    masks stats::lag()
--- finished re-building ‘allele-haplotype.Rmd’

--- re-building ‘eplet-mm.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) not available. Falling back to R Markdown v1.
── Attaching packages ─────────────────────────────────────── tidyverse 1.3.1 ──
✔ ggplot2 3.3.3     ✔ purrr   0.3.4
✔ tibble  3.1.1     ✔ dplyr   1.0.6
✔ tidyr   1.1.3     ✔ stringr 1.4.0
✔ readr   1.4.0     ✔ forcats 0.5.1
── Conflicts ────────────────────────────────────────── tidyverse_conflicts() ──
✖ dplyr::filter() masks stats::filter()
✖ dplyr::lag()    masks stats::lag()
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Quitting from lines 71-88 (eplet-mm.Rmd) 
Error: processing vignette 'eplet-mm.Rmd' failed with diagnostics:
invalid number of 'breaks'
--- failed re-building ‘eplet-mm.Rmd’

SUMMARY: processing the following file failed:
  ‘eplet-mm.Rmd’

Error: Vignette re-building failed.
Execution halted