Unable to join server as client crashes

Playername: peggledad
client version 1.20.4

My client crashes when breeding pigs in pig grinder farm.
I'm in player brefmeister's realm where we have a number of mob grinders but am only. affected by the pig grinder. Farm can be found at. coord's:

X: 452
Z: 362

realm: brefmeister

I get the following error in my client error log:


[22:15:05] [Render thread/ERROR]: Error executing task on Client

y: Main thread packet handler

at xh.a(SourceFile:33) ~[1.20.4.jar:?]

at bir.d(SourceFile:156) ~[1.20.4.jar:?]

at biv.d(SourceFile:23) ~[1.20.4.jar:?]

at bir.x(SourceFile:130) ~[1.20.4.jar:?]

at bir.bu(SourceFile:115) ~[1.20.4.jar:?]

at evi.d(SourceFile:1283) ~[1.20.4.jar:?]

at evi.f(SourceFile:888) ~[1.20.4.jar:?]

at net.minecraft.client.main.Main.main(SourceFile:265) ~[1.20.4.jar:?]

Caused by: java.lang.IllegalStateException: Invalid entity data item type for field 18 on entity byp['Pig'/814561, l='ClientLevel', x=452.45, y=67.47, z=362.50]: old=0(class java.lang.Integer), new=false(class java.lang.Boolean)

at agp.a(SourceFile:204) ~[1.20.4.jar:?]

at agp.a(SourceFile:191) ~[1.20.4.jar:?]

at fnt.a(SourceFile:529) ~[1.20.4.jar:?]

at acc.a(SourceFile:46) ~[1.20.4.jar:?]

at acc.a(SourceFile:10) ~[1.20.4.jar:?]

at xh.a(SourceFile:24) ~[1.20.4.jar:?]

... 7 more

This might be a Minecraft client bug but I can't replicate inn anything other than OR.

Many thanks,

Paul Brennan