Kafka SASL_SSL connector not working on FME, though Ok via Python / Apache NiFi

Hello,

We are desperately trying to make FME working with our Kafka cluster in SASL_SSL mode (SCRAM-SHA-512).

The Kafka cluster runs well : we are able to produce/consume from any Java/Python source code as well as via Apache NiFi, but on our FME Desktop, we get the following error message :

I don't have any more message to help me to troubleshoot it.

Any idea ?

Thanks in advance for your assistance.

LC