Fulltextsearch does not work after update to Nextcloud 20

[Reiner_Nippes]

Elasticsearch 7 and Nextcloud 20

Hello all, since the update to Nextcloud 20 my Elasticsearch instance is not working properly. I have updated the three plugins needed by Nextcloud in order to make Elasticsearch work. I have already tried to purge elasticsearch installation and re-install it once again (I did not forgot the ingest attachment) and my elasticsearch.yaml file is a default one (I edited the cluster and node name and setup the IP to 127.0.0.1). If I try to curl localhost on 9200 I can see the expected correct answer…