An error that seems to be without reason

[Mohammad-Taleghani]

I installed powerdns on centos 8
Then I installed the geoip backend
Once I did the pdns.conf and named.conf settings
I tried to start powerdns, but it gave the following error

Error parsing bind configuration: Error in bind configuration '/etc/pdns/named.conf' on line 2: syntax error

The content of the named.conf file is as follows:

options {
directory "/etc/pdns/zones/";
};

zone "example.com" {
type master;
file "example.com.zone";
};

and the contents of the pdns.conf file as follows :

cache-ttl=0
consistent-backends=yes
daemon=no
guardian=no
edns-subnet-processing=yes
enable-lua-records=yes
geoip-database-files=/etc/pdns/GeoLite2-City.mmdb
launch=bind, geoip
bind-config=/etc/pdns/named.conf
query-cache-ttl=0
query-logging=yes
setgid=pdns
setuid=pdns

There seems to be no problem in these two files
Only when this error is not received, named.conf is completely empty
If the content inside is 1 line, then line 2 will get an error