Hi Sabrina,
Required librairies
elasticsearch.jar and
lucene-core.jar.
Download and install the available modules button is disable, so I downloaded the libraires, I added them manually and I ended up without results.
I tested the latest version of both of them AND the oldest ones
el
asticsearch.2.3.5 &
lucene-core.5.5.0.
Best regards,
Sami BENSMIDA