Powering a beacon disconnects player from server

When powering a beacon with an ingot, the user is disconnected.

The Bug:

Upon powering the beacon, the use is disconnected with an io.netty.handler.codec.EncoderException. This behavior is observed in a server environment, but not in singleplayer. Base blocks, ingot used to power beacon, level of beacon, and effect chosen does not seem to matter. Upon joining, beacon does not gain its chosen effect, and user is refunded their ingot. See the video attached for process, and screenshot for full disconnect message.

Steps to Reproduce:

1. Join a Vanilla server in 22w14a

2. Place a beacon (with at least 3x3 of a refined ore block underneath)

3. Grab an ore of your choice and open beacon UI

4. Place ingot of choice in beacon UI slot, select an effect, and push the "check" button

Observed Result:

User is disconnected from server with an error. Beacon remains effect-less upon rejoining.

Expected Result:

Beacon gains its effect and user does not crash.

Stack trace

Error receiving packet 36
java.lang.IllegalArgumentException: Can't find id for 'null' in map Registry[ResourceKey[minecraft:root / minecraft:mob_effect] (Experimental)]
	at ql.a(SourceFile:115)
	at xc.a(SourceFile:25)
	at qn.a(SourceFile:45)
	at qn.encode(SourceFile:14)
	at io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:107)
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:717)
	at io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:764)
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:790)
	at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:758)
	at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:808)
	at io.netty.channel.DefaultChannelPipeline.writeAndFlush(DefaultChannelPipeline.java:1025)
	at io.netty.channel.AbstractChannel.writeAndFlush(AbstractChannel.java:306)
	at qj.a(SourceFile:214)
	at qj.b(SourceFile:206)
	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:164)
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:469)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:500)
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:986)
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
	at java.base/java.lang.Thread.run(Thread.java:833)