Error in across

[Unaimend]

data(iris)
iris %>%
  group_by(Species) %>%
  summarise(across(starts_with("Sepal"), ~ mean(.x, na.rm = TRUE)))

Results in following error
Error in across(): ! Must only be used inside data-masking verbs like mutate(), filter(), and group_by(). Run rlang::last_trace()to see where the error occurred. (ins)>

The code was copied from the documentation
https://dplyr.tidyverse.org/reference/across.html#:~:text=across()%20makes%20it%20easy,colwise%22)%20for%20more%20details.

[Unaimend]

This is definitely an issue with my current environment not with dplyr

[Unaimend]

The MASS package did mask the select function