Describe the bug you're experiencing

The error seems to reference the collective mod

https://www.curseforge.com/minecraft/mc-mods/collective

17:53:45] [Render thread/ERROR]: Unreported exception thrown!
java.lang.IllegalAccessError: class farsight.FarsightClientChunkManager tried to access private field net.minecraft.class_631.field_3676 (farsight.FarsightClientChunkManager and net.minecraft.class_631 are in unnamed module of loader net.fabricmc.loader.impl.launch.knot.KnotClassLoader @62e136d3)
at farsight.FarsightClientChunkManager.method_2857(FarsightClientChunkManager.java:50) ~[farsight-fabric-1.20.1-3.8.jar:?]
at farsight.FarsightClientChunkManager.method_12121(FarsightClientChunkManager.java:25) ~[farsight-fabric-1.20.1-3.8.jar:?]
at net.minecraft.class_1937.method_8402(class_1937.java:204) ~[client-intermediary.jar:?]
at net.minecraft.class_4538.method_22342(class_4538.java:156) ~[client-intermediary.jar:?]
at net.minecraft.class_1937.method_8497(class_1937.java:198) ~[client-intermediary.jar:?]
at com.natamus.collective_common_fabric.functions.FABFunctions.getBlockEntitiesAroundPosition(FABFunctions.java:34) ~[collective-1.20.1-6.62.jar:?]
at com.natamus.areas_common_fabric.events.ClientEvent.onClientTick(ClientEvent.java:42) ~[areas-1.20.1-5.0.jar:?]
at com.natamus.areas.ModFabricClient.lambda$registerEvents$0(ModFabricClient.java:21) ~[areas-1.20.1-5.0.jar:?]
at net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientTickEvents.lambda$static$0(ClientTickEvents.java:34) ~[fabric-lifecycle-events-v1-2.2.2+b3afc78b77-5394548d5b576a28.jar:?]
at net.minecraft.class_310.handler$fhf000$fabric-lifecycle-events-v1$onStartTick(class_310.java:18028) ~[client-intermediary.jar:?]
at net.minecraft.class_310.method_1574(class_310.java) ~[client-intermediary.jar:?]
at net.minecraft.class_310.method_1523(class_310.java:1181) ~[client-intermediary.jar:?]
at net.minecraft.class_310.method_1514(class_310.java:802) ~[client-intermediary.jar:?]
at net.minecraft.client.main.Main.main(Main.java:250) ~[fabric-loader-0.14.21-1.20.1.jar:?]
at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:468) ~[fabric-loader-0.14.21.jar:?]
at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:74) ~[fabric-loader-0.14.21.jar:?]
at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23) ~[fabric-loader-0.14.21.jar:?]

Reproducability

have the following installed on server:
farsight-fabric-1.20.1-3.8.jar
collective-1.20.1-6.62

have the following installed on client:
farsight-fabric-1.20.1-3.8.jar
collective-1.20.1-6.62

launch server
launch client

connect to server with client after server is fully loaded
client experiences crash and error.

Mod up to date

• Before submitting this issue I updated to the newest version and reproduced it

Minecraft version

1.20.1

Modloader version

Fabric

Logs

https://gist.github.com/Renix4/d6557f956eef84afd87e059417e1990b

same problem here, impossible to connect to my usual server with farsight 1.3.8
i downgraded to farsight 1.3.7 and all is well and works again

fixed in 3.9