Graylog 3.2 HTTPS private key issue

Graylog Central (peer support)
3

Hi,

I tried to use the HAProxy and configure the https for the web interface.
I tried to browse after the configuration but unable to access the site via https.

My HAproxy Config code. Am i missing anything.

frontend graylog_https

    bind 192.168.1.50:443 ssl crt /etc/ssl/certs/collector.pem ciphers !aNULL:!MD5:AES128+EECDH:AES128+EDH:!RC4  no-sslv3
    reqadd X-Forwarded-Proto:\ https if { ssl_fc }
    acl is_graylog hdr_dom(host) -i -m str graylogcollector.example.corp
    use_backend graylog if is_graylog

    # Distinguish between secure and insecure requests
    acl secure dst_port eq 443
    # Mark all cookies as secure if sent over SSL
    rsprep ^Set-Cookie:\ (.*) Set-Cookie:\ \1;\ Secure if secure
    # Add the HSTS header with a 1 year max-age
    rspadd Strict-Transport-Security:\ max-age=0

backend graylog

    description     The Graylog Secure Web backend.
    redirect scheme https if !{ ssl_fc }
    mode http
    balance roundrobin
    option httpchk HEAD /api/system/lbstatus
    http-request set-header X-Graylog-Server-URL https://graylogcollector.example.corp
    server graylog1 192.168.1.101:9000 maxconn 20 check
    server graylog2 192.168.1.102:9000 maxconn 20 check