warn

[22:05:39 WARN]: [ViaVersion] Pair{PLAY, -1} already registered! If this override is intentional, set override to true. Stacktrace:
java.lang.Exception: null
        at us.myles.ViaVersion.api.protocol.Protocol.registerIncoming(Protocol.java:110) ~[?:?]
        at us.myles.ViaVersion.api.protocol.Protocol.registerIncoming(Protocol.java:103) ~[?:?]
        at nl.matsv.viabackwards.api.BackwardsProtocol.in(BackwardsProtocol.java:28) ~[?:?]
        at nl.matsv.viabackwards.protocol.protocol1_12_2to1_13.Protocol1_12_2To1_13.registerPackets(Protocol1_12_2To1_13.java:130) ~[?:?]
        at us.myles.ViaVersion.api.protocol.Protocol.<init>(Protocol.java:25) ~[?:?]
        at nl.matsv.viabackwards.api.BackwardsProtocol.<init>(BackwardsProtocol.java:17) ~[?:?]
        at nl.matsv.viabackwards.protocol.protocol1_12_2to1_13.Protocol1_12_2To1_13.<init>(Protocol1_12_2To1_13.java:35) ~[?:?]
        at nl.matsv.viabackwards.api.ViaBackwardsPlatform.init(ViaBackwardsPlatform.java:44) ~[?:?]
        at nl.matsv.viabackwards.BukkitPlugin.onEnable(BukkitPlugin.java:19) ~[?:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:265) ~[patched_1.13.2.jar:git-Paper-639]
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:334) ~[patched_1.13.2.jar:git-Paper-639]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:412) ~[patched_1.13.2.jar:git-Paper-639]
        at org.bukkit.craftbukkit.v1_13_R2.CraftServer.enablePlugin(CraftServer.java:443) ~[patched_1.13.2.jar:git-Paper-639]
        at org.bukkit.craftbukkit.v1_13_R2.CraftServer.enablePlugins(CraftServer.java:357) ~[patched_1.13.2.jar:git-Paper-639]
        at net.minecraft.server.v1_13_R2.DedicatedServer.init(DedicatedServer.java:236) ~[patched_1.13.2.jar:git-Paper-639]
        at net.minecraft.server.v1_13_R2.MinecraftServer.run(MinecraftServer.java:787) ~[patched_1.13.2.jar:git-Paper-639]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_221]