add_count() error

[artxz]

add_count() returns the following error

Error in group_by(d_tmp, ..., .add = add) : 
  formal argument ".add" matched by multiple actual arguments

an example:

library(ggraph)
library(tidygraph)
library(tidyverse)

graph <-
  as_tbl_graph(highschool) %>%
  activate(edges) %>%
  group_by(to) %>%
  mutate(n = n()) %>%
  add_count(to, name='deg_in')

[thomasp85]

add_count() is not a tidygraph function