HAProxy not showing stats

If I open the link showed http://mariadb-2:9999/stats/;csv/ it shows status OK but the interface does not all blank

global
    user haproxy
    group haproxy
defaults
    mode http
    log global
    retries 20
    timeout connect 20m
    timeout server 30m
    timeout client 30m
listen stats
    bind 0.0.0.0:9999
    stats enable
    stats hide-version
    stats uri /stats
    stats auth XXXXX:XXXXX
listen mysql-cluster
    bind 0.0.0.0:3306
    mode tcp
    #option mysql-check user clustercheckuser
    balance roundrobin
    server db1 192.168.2.41:3307 check port 9200 inter 12000 rise 3 fall 3
    server db2 192.168.2.42:3307 check port 9200 inter 12000 rise 3 fall 3
    server db3 192.168.2.43:3307 check port 9200 inter 12000 rise 3 fall 3

How do I fix this?