No provider for argument pehkui:scale_operation

[TheHecateII]

With the mod pehkui impossible to connect from the proxy, it systematically returns this error

Version 1.16.5
Tested server tech : Arclight and mohist

[22:45:23 WARN]: [/127.0.0.1:59972|DeuxPoulpe] <-> DownstreamBridge <-> [lobby] - could not decode packet! java.lang.IllegalArgumentException: No provider for argument pehkui:scale_operation [22:45:23 ERROR]: io.netty.handler.codec.DecoderException: java.lang.IllegalArgumentException: No provider for argument pehkui:scale_operation [22:45:23 ERROR]: at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:98) [22:45:23 ERROR]: at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444) [22:45:23 ERROR]: at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) [22:45:23 ERROR]: at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) [22:45:23 ERROR]: at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103) [22:45:23 ERROR]: at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444) [22:45:23 ERROR]: at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) [22:45:23 ERROR]: at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) [22:45:23 ERROR]: at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:346) [22:45:23 ERROR]: at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:318) [22:45:23 ERROR]: at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444) [22:45:23 ERROR]: at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) [22:45:23 ERROR]: at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) [22:45:23 ERROR]: at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410) [22:45:23 ERROR]: at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440) [22:45:23 ERROR]: at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) [22:45:23 ERROR]: at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919) [22:45:23 ERROR]: at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166) [22:45:23 ERROR]: at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:788) [22:45:23 ERROR]: at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:724) [22:45:23 ERROR]: at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:650) [22:45:23 ERROR]: at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:562) [22:45:23 ERROR]: at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) [22:45:23 ERROR]: at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) [22:45:23 ERROR]: at java.lang.Thread.run(Unknown Source) [22:45:23 ERROR]: Caused by: java.lang.IllegalArgumentException: No provider for argument pehkui:scale_operation [22:45:23 ERROR]: at com.google.common.base.Preconditions.checkArgument(Preconditions.java:145) [22:45:23 ERROR]: at net.md_5.bungee.protocol.packet.Commands$ArgumentRegistry.read(Commands.java:789) [22:45:23 ERROR]: at net.md_5.bungee.protocol.packet.Commands$ArgumentRegistry.access$000(Commands.java:307) [22:45:23 ERROR]: at net.md_5.bungee.protocol.packet.Commands.read(Commands.java:84) [22:45:23 ERROR]: at net.md_5.bungee.protocol.MinecraftDecoder.decode(MinecraftDecoder.java:60) [22:45:23 ERROR]: at net.md_5.bungee.protocol.MinecraftDecoder.decode(MinecraftDecoder.java:12) [22:45:23 ERROR]: at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:88) [22:45:23 ERROR]: ... 24 more [22:45:23 INFO]: [DeuxPoulpe] disconnected with: The server you were previously on went down, you have been connected to a fallback server