Frontend mode tcp with ssl not work

Hi all,
I want to use haproxy to reverse proxy for a postgresql service
192.168.7.112 is haproxy (haproxy run as container) (postgres.mydomain.com resolve dns = 192.168.7.112)
192.168.0.205 is postgresql server
haproxy.cfg

global
    log         127.0.0.1 local2 info
    stats timeout 30s
    daemon
    maxconn 4096

defaults
    log global
    option tcplog
    mode tcp
    timeout connect 10s
    timeout client 1m
    timeout server 1m

frontend postgres_frontend
    bind *:5434 ssl crt /etc/ssl/certs/mycert.pem
    #bind *:5434
    mode tcp
    default_backend postgres_backend

backend postgres_backend
    mode tcp
    balance roundrobin
    #option tcp-check
    server postgres1 192.168.0.205:5434

mycert.pem is my valid wildcard certificate for *.mydomain.com with format

-----BEGIN CERTIFICATE-----
<Server Certificate>
-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----
<Intermediate Certificate>
-----END CERTIFICATE-----
-----BEGIN PRIVATE KEY-----
<Private Key>
-----END PRIVATE KEY-----

from a psql client on differrent host

psql "host=postgres.mydomain.com port=5434 dbname=mydb user=postgres password=***** sslmode=require"
psql: error: connection to server at "postgres.mydomain.com" (192.168.7.112), port 5434 failed: server closed the connection unexpectedly
        This probably means the server terminated abnormally
        before or while processing the request.

If I remove ssl from haproxy frontend config

frontend postgres_frontend
    #bind *:5434 ssl crt /etc/ssl/certs/mycert.pem
    bind *:5434
    mode tcp
    default_backend postgres_backend

and connect again without ssl , it works ok
psql "host=postgres.mydomain.com port=5434 dbname=mydb user=postgres password=***** sslmode=disable"
please give me some advice, thank you very much.

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