WARN messages in elsasticsearch.log CFF/OTF

I have lots of WARN Messages in elasticsearch.log

WARNING: Found CFF/OTF but expected embedded TTF fount Generic3-Regular

and also

POI does not currently support template.main+xml (glossary) parts. Skipping this part for now.

How to handle these warnings so I will not get them?

What version are you using? IIRC this was a problem with the attachment processor a few versions back, but it's fixed now.

Elasticsearch 8.6.1

Ok, this is mentioned as a known issue in the release notes for 8.6.1 here:

As it says, upgrade to ≥8.7.0 to pick up the fix

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