Can't give argument to non-function where .Site.RegularPages "Section" "posts"`

support
1

I understand this is caused by a Go update. But I can’t figure out how to fix it. Can anyone help?

{{ range .Pages | (where .Site.RegularPages "Section" "posts") }}
gives
can't give argument to non-function where .Site.RegularPages "Section" "posts"

Thank you.

2 
{{ range where .Pages "Section" "foo" }}
  {{ .Content }}
{{ end }}

or

{{ range where .Site.RegularPages "Section" "posts" }}
  {{ .Content }}
{{ end }}