Pgadmin 4 and jdbc connection Feature Not supported errors

[J T]

Running a test environment with

2025-08-20 21:31:44 [INFO] Using OpenSSL version: OpenSSL 3.2.2 4 Jun 2024
ProxySQL version 3.0.2-30-gafb1865, codename Truls

Straight client connections with psql work fine. 

Connections using pgadmin4 on centos 9 work fin as well. I can see my environment.

But, when i actually execute a query like 

select count(*) from t1

I get the error "Feature not supported"

In the proxysql log i have the following:

2025-08-20 21:34:31 PgSQL_Session.cpp:2539:get_pkts_from_client(): [ERROR] Not implemented yet. Message type:'S'

Any clues on this ?

Thanks