This plugin is slightly confusing to set up, but it still works. I was able to get my resource pack working for 1.16, 1.16.2, and 1.17. Great plugin, just wish it was open source.

Good plugin, and please update to 1.16 (1.8 - 1.16 please)
.....................

Help pls ?
[07:13:06] [Server thread/ERROR]: Could not pass event PlayerJoinEvent to PerVersionResources v1.0-b400533207
java.util.NoSuchElementException: null
at java.util.HashMap$HashIterator.nextNode(HashMap.java:1447) ~[?:1.8.0_222]
at java.util.HashMap$KeyIterator.next(HashMap.java:1469) ~[?:1.8.0_222]
at eu.battlecraft.perversionresources.Listener.onJoin(Listener.java:22) ~[?:?]
at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor19.execute(Unknown Source) ~[?:?]
at org.bukkit.plugin.EventExecutor.lambda$create$1(EventExecutor.java:69) ~[patched_1.15.2.jar:git-Paper-143]
at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:80) ~[patched_1.15.2.jar:git-Paper-143]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[patched_1.15.2.jar:git-Paper-143]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:559) ~[patched_1.15.2.jar:git-Paper-143]
at net.minecraft.server.v1_15_R1.PlayerList.a(PlayerList.java:192) ~[patched_1.15.2.jar:git-Paper-143]
at net.minecraft.server.v1_15_R1.LoginListener.c(LoginListener.java:174) ~[patched_1.15.2.jar:git-Paper-143]
at net.minecraft.server.v1_15_R1.LoginListener.tick(LoginListener.java:65) ~[patched_1.15.2.jar:git-Paper-143]
at net.minecraft.server.v1_15_R1.NetworkManager.a(NetworkManager.java:256) ~[patched_1.15.2.jar:git-Paper-143]
at net.minecraft.server.v1_15_R1.ServerConnection.c(ServerConnection.java:139) ~[patched_1.15.2.jar:git-Paper-143]
at net.minecraft.server.v1_15_R1.MinecraftServer.b(MinecraftServer.java:1269) ~[patched_1.15.2.jar:git-Paper-143]
at net.minecraft.server.v1_15_R1.DedicatedServer.b(DedicatedServer.java:430) ~[patched_1.15.2.jar:git-Paper-143]
at net.minecraft.server.v1_15_R1.MinecraftServer.a(MinecraftServer.java:1112) ~[patched_1.15.2.jar:git-Paper-143]
at net.minecraft.server.v1_15_R1.MinecraftServer.run(MinecraftServer.java:934) ~[patched_1.15.2.jar:git-Paper-143]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_222