Book rendering fails due to demonstration error included in code

[Zagamog]

Hello ! I get the following error message in trying to render the book in an RStudio interface.

Quitting from lines 13131-13136 (outstanding-shiny-ui.Rmd)
Error in reporter$stop_if_needed() : Test failed
Calls: ... eval_with_user_handlers -> eval -> eval -> test_that ->
Execution halted
Exited with status 1.

The lines in question look like a test that is meant to fail for didactic purposes, but I could not find instructions about how to avoid the
book rendering to fail because of this test.

The lines mentioned in the code are as follows.

test_that("validate width works", {
  expect_error(tabler_card(width = -1))
  expect_error(tabler_card(width = 13))
  expect_error(tabler_card(width = "hello world"))
})

Notice how the three above tests elegantly fail. The provided context ("validate width works") immediately indicates the culprit, which is a game changer for debugging.

If there would be a way to escape these lines, the code could continue rendering until the end or at least until a next error message. Thank you !