How to debug incomplete message on postgres 12.3 docker - Mailing list pgsql-general

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"