How to debug incomplete message on postgres 12.3 docker

Hello,

I hope i reached the right mailing list, i have psql 12.3 container that is
the db of apache guacamole container is connected to,
the apache guacamole stopped working and i started to get this message on
the postgres:

LOG: incomplete message from client

How can I debug it?

i want to see when and who did the translation and what is the
incomplete query ? because i did approached guacamole mailing list and
they said my DB is closing connection in the middle of the transaction

and its psql issue and i am not able to debug it because i only have
this incomlit msg.

*Is there a way to catch this transaction?*

full logs :

postgres_gqm_1 | 2022-01-13T19:32:24.187916615Z 2022-01-13
19:32:24.187 UTC [4394] LOG: incomplete message from client

guacamole_1 | 2022-01-13T19:32:24.214231454Z 19:32:24.214
[http-nio-8080-exec-6] ERROR o.a.g.rest.RESTExceptionMapper -
Unexpected internal error:
guacamole_1 | 2022-01-13T19:32:24.214398980Z ### Error rolling
back transaction. Cause: org.postgresql.util.PSQLException: This
connection has been closed.
guacamole_1 | 2022-01-13T19:32:24.214445260Z ### Cause:
org.postgresql.util.PSQLException: This connection has been closed.

docker file :

postgres_gqm:

image: postgres:12.3
environment:
PGDATA: /var/lib/postgresql/data/guacamole
POSTGRES_DB: db
POSTGRES_PASSWORD: XXX
POSTGRES_USER: user
restart: always
volumes:
- ./init:/docker-entrypoint-initdb.d:ro
- ./data:/var/lib/postgresql/data:rw
logging:
driver: "json-file"
options:
max-size: "750m"