I got this issue when loading the plugin on 1.20

[09:31:06] [main/WARN]: Exception encountered when loading plugin: CountryBlocker
java.lang.NoSuchMethodError: java.nio.ByteBuffer.position(I)Ljava/nio/ByteBuffer;
at com.maxmind.db.Decoder.decode(Decoder.java:85) ~[?:?]
at com.maxmind.db.Reader.<init>(Reader.java:132) ~[?:?]
at com.maxmind.db.Reader.<init>(Reader.java:116) ~[?:?]
at com.maxmind.geoip2.DatabaseReader.<init>(DatabaseReader.java:66) ~[?:?]
at com.maxmind.geoip2.DatabaseReader.<init>(DatabaseReader.java:62) ~[?:?]
at com.maxmind.geoip2.DatabaseReader$Builder.build(DatabaseReader.java:160) ~[?:?]
at me.bakalexis.CountryBlocker.onEnable(CountryBlocker.java:49) ~[?:?]
at net.md_5.bungee.api.plugin.PluginManager.enablePlugins(PluginManager.java:316) ~[waterfall.jar:git:Waterfall-Bootstrap:1.20-R0.1-SNAPSHOT:ec41547:536]
at net.md_5.bungee.BungeeCord.start(BungeeCord.java:299) ~[waterfall.jar:git:Waterfall-Bootstrap:1.20-R0.1-SNAPSHOT:ec41547:536]
at net.md_5.bungee.BungeeCordLauncher.main(BungeeCordLauncher.java:67) ~[waterfall.jar:git:Waterfall-Bootstrap:1.20-R0.1-SNAPSHOT:ec41547:536]
at net.md_5.bungee.Bootstrap.main(Bootstrap.java:15) ~[waterfall.jar:git:Waterfall-Bootstrap:1.20-R0.1-SNAPSHOT:ec41547:536]

Very good plugin and friendly developer <3