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

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

Quitting from PairVizIntroduction.Rmd:311-320 [unnamed-chunk-21]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error in `gsize()`:
! At vendor/cigraph/src/core/vector.pmt:516 : Assertion failed: v->stor_begin != NULL. This is an unexpected igraph error; please report this as a bug, along with the steps to reproduce it.
Please restart your R session to avoid crashes or other surprising behavior.
---
Backtrace:
     ▆
  1. ├─base::withVisible(knit_print(x, ...))
  2. ├─knitr::knit_print(x, ...)
  3. └─knitr:::knit_print.default(x, ...)
  4.   └─knitr::normal_print(x)
  5.     ├─base::print(x)
  6.     └─igraph:::print.igraph.es(x)
  7.       └─igraph:::.print.edges.compressed(...)
  8.         ├─... %+% ":\n"
  9.         │ └─base::stopifnot(is.character(x), is.character(y))
 10.         ├─... %+% ...
 11.         │ └─base::stopifnot(is.character(x), is.character(y))
 12.         ├─... %+% (if (is.null(x)) " (deleted)" else "")
 13.         │ └─base::stopifnot(is.character(x), is.character(y))
 14.         ├─... %+% ...
 15.         │ └─base::stopifnot(is.character(x), is.character(y))
 16.         ├─... %+% (if (len == 1) " edge" else " edges")
 17.         │ └─base::stopifnot(is.character(x), is.character(y))
 18.         ├─"+" %+% ...
 19.         │ └─base::stopifnot(is.character(x), is.character(y))
 20.         ├─" " %+% chr(len) %+% "/" %+% ...
 21.         │ └─base::stopifnot(is.character(x), is.character(y))
 22.         └─igraph::gsize(x)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'PairVizIntroduction.Rmd' failed with diagnostics:
At vendor/cigraph/src/core/vector.pmt:516 : Assertion failed: v->stor_begin != NULL. This is an unexpected igraph error; please report this as a bug, along with the steps to reproduce it.
Please restart your R session to avoid crashes or other surprising behavior.
--- failed re-building ‘PairVizIntroduction.Rmd’

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

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

Error: Vignette re-building failed.
Execution halted