'list' object cannot be coerced to type 'double'

[Steviey]

What could be wrong with this:

df <- tibble(
	factors_col = factor(c("A", "B", "C")),
	characters_col = c("Apple", "Banana", "Cherry"),
	numbers_col = c(1, 2, 3)
)

#df <-df %>% dplyr::mutate(across(where(is.factor),as.numeric))
df  <-collapse::settransform(df,get_vars(df, function(x) is.factor(x)) %>% 
	as.numeric())

glimpse(df[1:2,])

Error in get_vars(df, function(x) is.factor(x)) %>% as.numeric() :
'list' object cannot be coerced to type 'double'

[Steviey]

df <-df %>% collapse::fmutate(across(is.factor,list(as.numeric)))