I have installed a PgPool-II and PostgreSQL server on one server. Another PostgreSQL on second server.
All servers are working normally, network connection is ok, but on my PgPool-II logs Im getting errors and replication is not working:

Aug 11 14:51:28 pgpool[130673]: 2024-08-11 14:51:28.654: sr_check_worker pid 130673: LOG:  get_query_result failed: status: -2
Aug 11 14:51:28 pgpool[130673]: 2024-08-11 14:51:28.654: sr_check_worker pid 130673: CONTEXT:  while checking replication time lag

Where is the problem? Why replication does not work?