Exception encountered when loading plugin: HAProxyDetector java.lang.NoSuchFieldException: SERVER_CHILD

[BAD7777]

Exception encountered when loading plugin: HAProxyDetector
java.lang.NoSuchFieldException: SERVER_CHILD
at java.lang.Class.getField(Class.java:2343) ~[?:?]
at net.andylizi.haproxydetector.bungee.BungeeMain.onEnable(BungeeMain.java:107) ~[?:?]
at net.md_5.bungee.api.plugin.PluginManager.enablePlugins(PluginManager.java:317) ~[server.jar:1.21-R0.4-SNAPSHOT]
at net.md_5.bungee.BungeeCord.start(BungeeCord.java:292) ~[server.jar:1.21-R0.4-SNAPSHOT]
at net.md_5.bungee.BungeeCordLauncher.main(BungeeCordLauncher.java:60) ~[server.jar:1.21-R0.4-SNAPSHOT]
at net.md_5.bungee.Bootstrap.main(Bootstrap.java:12) ~[server.jar:1.21-R0.4-SNAPSHOT]
at de.brownie.nativeutil.Bootstrap.main(Unknown Source) ~[server.jar:1.21-R0.4-SNAPSHOT]