Error with kableExtra::column_spec() might involve xml2

[eipi10]

A recent question on StackOverflow describes the following error:

library(tidyverse)
library(knitr)
library(kableExtra)

Summary <- mtcars %>% 
            group_by(cyl, gear, carb) %>% 
            summarise(count = n(), .groups = "keep") %>% 
            arrange(desc(cyl))

kable(Summary, caption = "mtcars Data Summary\n", align = c('l','l','c','c')) %>%
                  kable_styling(bootstrap_options = c("striped","hover"),full_width = FALSE, position = "left") %>% 
                  collapse_rows(columns = 1, valign = "top") %>% 
                  column_spec(1, width = "3cm") %>% 
                  column_spec(2, width = "3cm") %>% 
                  column_spec(3, width = "2cm") %>% 
                  column_spec(4, width = "2cm")

# Error in xml_children(x)[[search]] : subscript out of bounds

The code works as expected until the last column_spec call, which produces the error. There's also an unsolved kableExtra issue that seems to be similar to this and that may be related to the xml2 package.

I thought I would report these errors here in case this is a bug in the xml2 package. If not, do you have any ideas on what's going wrong and whether there might be a workaround?

[hadley]

Can you please provide a minimal reprex (reproducible example)? The goal of a reprex is to make it as easy as possible for me to recreate your problem so that I can fix it: please help me help you! If you've never heard of a reprex before, start by reading about the reprex package, including the advice further down the page. Please make sure your reprex is created with the reprex package as it gives nicely formatted output and avoids a number of common pitfalls.

[eipi10]

I think you can close this. The error occurred with the listed code back in December 2020 when I filed this issue. However, it no longer occurs with the current version of kableExtra.