At start of the page log_out_user/1on_mount/4 should be on separate lines
iex> exports PentoWeb.UserAuth
__phoenix_verify_routes__/1
fetch_current_scope_for_user/2
log_in_user/2
log_in_user/3
log_out_user/1on_mount/4
redirect_if_user_is_authenticated/2
require_authenticated_user/2