Maybe this question is repeating but I can’t find a solution in this forum.
As the caption mentioned, Elasticsearch failed to work after upgrade. In fact, I tested the Elasticsearch server by using “curl” and it does work but when I do occ Fulltextsearch:test, I got “Search platform (Elasticsearch) down ?” in Test.php line 304.
In case someone come across this problem, it is because of elasticsearch authentication problem. Passing user:password at the url does not work.
try edit: fulltextsearch_elasticsearch/lib/Platform/ElasticSearchPlatform.php, below: ->setHosts($hosts) of connectToElastic, add (i.e. hardcode): ->setBasicAuthentication(‘user’, ‘password’), then it will work again.