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support
4

I don’t know why is not working.
I copied and pasted the example in the docs:

{{ $related := .Site.RegularPages.Related . | first 5 }}
{{ with $related }}

<h3>See Also</h3>
<ul>
{{ range . }}
<li><a href="{{ .RelPermalink }}">{{ .Title }}</a></li>
{{ end }}
</ul>
{{ end }}

and on my config

[related]
threshold = 80
includeNewer = true
toLower = false
[[related.indices]]
name  = "tags"
weight = 100
[[related.indices]]
name  = "categories"
weight = 140

I also tried nachocaru solution and nothing.