"java.lang.IllegalArgumentException: unable to fit 2186828 into 3" when installed into Prominence II fabric

[Avabin]

When installed into latest server version of Prominence II RPG (running on fabric) v3.0.6 or v3.0.7, both, noone can join because of exception below.

Problem arises only after installing this mod and no other.

Mod version: latest (1.1.4)
Fabric version: 0.16.5

minecraft-prominence-1  | [18:09:19] [Server thread/INFO]: Avabin[/10.0.0.5:49619] logged in with entity id 83 at (195.05025135750094, 94.0, 383.4085727246465)
minecraft-prominence-1  | [18:09:19] [Server thread/INFO]: Sending server config values to client
minecraft-prominence-1  | [18:09:20] [Server thread/INFO]: Syncing config to Avabin (381879ac-a87c-3db7-b2f0-7db4acf2f900)
minecraft-prominence-1  | [18:09:20] [Server thread/INFO]: Loading config from file...
minecraft-prominence-1  | [18:09:20] [Server thread/INFO]: [betternether] Freeze Registry[ResourceKey[minecraft:root / worlds_together:worldgen/betterx/surface_rules] (Stable)]
minecraft-prominence-1  | [18:09:20] [Server thread/INFO]: Avabin joined the game
minecraft-prominence-1  | [18:09:20] [Server thread/INFO]: Updating all forceload tickets for 381879ac-a87c-3db7-b2f0-7db4acf2f900
minecraft-prominence-1  | [18:09:20] [Server thread/INFO]: PLAYER_JOIN
minecraft-prominence-1  | [18:09:20] [Server thread/INFO]: add_player wand
minecraft-prominence-1  | [18:09:20] [Server thread/INFO]: config sent
minecraft-prominence-1  | [18:09:21] [Netty Epoll Server IO #6/ERROR]: Exception occurred in netty pipeline
minecraft-prominence-1  | io.netty.handler.codec.EncoderException: java.lang.IllegalArgumentException: unable to fit 2186828 into 3
minecraft-prominence-1  |       at io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:125) ~[netty-codec-4.1.82.Final.jar:?]
minecraft-prominence-1  |       at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:717) ~[netty-transport-4.1.82.Final.jar:?]
minecraft-prominence-1  |       at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:709) ~[netty-transport-4.1.82.Final.jar:?]
minecraft-prominence-1  |       at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:792) ~[netty-transport-4.1.82.Final.jar:?]
minecraft-prominence-1  |       at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:702) ~[netty-transport-4.1.82.Final.jar:?]
minecraft-prominence-1  |       at io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:113) ~[netty-codec-4.1.82.Final.jar:?]
minecraft-prominence-1  |       at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:717) ~[netty-transport-4.1.82.Final.jar:?]
minecraft-prominence-1  |       at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:709) ~[netty-transport-4.1.82.Final.jar:?]
minecraft-prominence-1  |       at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:792) ~[netty-transport-4.1.82.Final.jar:?]
minecraft-prominence-1  |       at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:702) ~[netty-transport-4.1.82.Final.jar:?]
minecraft-prominence-1  |       at io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:113) ~[netty-codec-4.1.82.Final.jar:?]
minecraft-prominence-1  |       at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:717) ~[netty-transport-4.1.82.Final.jar:?]
minecraft-prominence-1  |       at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:709) ~[netty-transport-4.1.82.Final.jar:?]
minecraft-prominence-1  |       at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:792) ~[netty-transport-4.1.82.Final.jar:?]
minecraft-prominence-1  |       at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:702) ~[netty-transport-4.1.82.Final.jar:?]
minecraft-prominence-1  |       at io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:113) ~[netty-codec-4.1.82.Final.jar:?]
minecraft-prominence-1  |       at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:717) ~[netty-transport-4.1.82.Final.jar:?]
minecraft-prominence-1  |       at io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:764) ~[netty-transport-4.1.82.Final.jar:?]
minecraft-prominence-1  |       at io.netty.channel.AbstractChannelHandlerContext$WriteTask.run(AbstractChannelHandlerContext.java:1071) ~[netty-transport-4.1.82.Final.jar:?]
minecraft-prominence-1  |       at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:174) ~[netty-common-4.1.82.Final.jar:?]
minecraft-prominence-1  |       at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:167) ~[netty-common-4.1.82.Final.jar:?]
minecraft-prominence-1  |       at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:470) ~[netty-common-4.1.82.Final.jar:?]
minecraft-prominence-1  |       at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:406) ~[netty-transport-classes-epoll-4.1.82.Final.jar:?]
minecraft-prominence-1  |       at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) ~[netty-common-4.1.82.Final.jar:?]
minecraft-prominence-1  |       at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[netty-common-4.1.82.Final.jar:?]
minecraft-prominence-1  |       at java.lang.Thread.run(Unknown Source) ~[?:?]
minecraft-prominence-1  | Caused by: java.lang.IllegalArgumentException: unable to fit 2186828 into 3
minecraft-prominence-1  |       at net.minecraft.class_2552.method_10840(class_2552.java:18) ~[server-intermediary.jar:?]
minecraft-prominence-1  |       at net.minecraft.class_2552.encode(class_2552.java:8) ~[server-intermediary.jar:?]
minecraft-prominence-1  |       at io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:107) ~[netty-codec-4.1.82.Final.jar:?]
minecraft-prominence-1  |       ... 25 more
minecraft-prominence-1  | [18:09:21] [Server thread/INFO]: Avabin lost connection: Internal Exception: io.netty.handler.codec.EncoderException: java.lang.IllegalArgumentException: unable to fit 2186828 into 3
minecraft-prominence-1  | [18:09:21] [Server thread/INFO]: Avabin left the game
minecraft-prominence-1  | [18:09:21] [Server thread/INFO]: remove player wand
minecraft-prominence-1  | [18:09:21] [Server thread/INFO]: Updating all forceload tickets for 381879ac-a87c-3db7-b2f0-7db4acf2f900