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it was all about the permission thing

chmod -R 777 /root

this command solved the problem.

the geoip c api is installed in /root directory which bind does not have permission to reach. but giving no warning is very annoying.

I recommend you to install the geoip c api of maxmind at a directory other than /root

geolocation - Bind DNS server with GeoIP City, database not available ...

dns geolocation bind geoip maxmind