"server is down, reason: Layer7 wrong status" although it's up and running

Help!
1

Hi,

I’m using haproxy version 2.9.4.

this is my configuration file:

**listen production**
**        bind 192.168.7.208:5000
**        option httpchk OPTIONS /master**
**        http-check expect status 200**
**        default-server inter 3s fall 3 rise 2 on-marked-down shutdown-sessions**
**        server pgsql-db01 192.168.7.200:5432 check port 8008**
**        server pgsql-db02 192.168.7.201:5432 check port 8008**
**        server pgsql-db03 192.168.7.202:5432 check port 8008**
**```**
**listen replica**
**        bind 192.168.7.208:5001
**        option httpchk OPTIONS /replica**
**        http-check expect status 200**
**        default-server inter 3s fall 3 rise 2 on-marked-down shutdown-sessions**
**        server pgsql-db01 192.168.7.200:5432 check port 8008**
**        server pgsql-db02 192.168.7.201:5432 check port 8008**
**        server pgsql-db03 192.168.7.202:5432 check port 8008**

haproxy is starting but...
getting warning Messages:
server production/pgsql-db02 is DOWN, reason: Layer7 wrong status....
server production/pgsql-db03 is DOWN, reason: Layer7 wrong status....
server replica/pgsql-db01 is DOWN, reason: Layer7 wrong status....
server replica/pgsql-db02 is DOWN, reason: Layer7 wrong status....
server replica/pgsql-db03 is DOWN, reason: Layer7 wrong status....

although all servers DBs are up and running.