graphql can't start with error connecting to haproxy

[tydjwork]

docker logs -f patroni_graphql
Postgres connection info:
Host: haproxy
Port: 5000
User: postgres
Database: postgres
{"internal":"could not connect to server: Connection refused\n\tIs the server running on host "haproxy" (10.111.6.4) and accepting\n\tTCP/IP connections on port 5000?\n","path":"$","error":"connection error","code":"postgres-error"}