Error in `gsub(as.character(pattern), as.character(replacement), x, ignore.case, perl, fixed, useBytes)`: NA in coercion to boolean

test_that("add_gloss(), gloss_example(), make_gloss_list() test", {
package = "lingglosses", mustWork = TRUE), full.names = TRUE)
rmarkdown::render(paste0(tmp, "/skeleton.Rmd"), quiet = TRUE,
label = "something get wrong in html version")