Iceberg and Sodium Rendering Conflict (VertexCollector ClassCastException)

What it looks like in the log

java.lang.ClassCastException: class com.anthonyhilyard.iceberg.renderer.VertexCollector$1 cannot be cast to class me.jellysquid.mods.sodium.client.ren

How to fix it

1. Update the Iceberg mod to the latest version available for your Minecraft version, as newer releases include compatibility fixes for Sodium's vertex system.
2. Update Sodium (and Indium, if you are on Fabric or Quilt) to the latest version for your Minecraft release, since Sodium 0.4.9 had known crashes with custom vertex consumers that were addressed in 0.4.10+.
3. If no newer version of Iceberg or Sodium exists for your Minecraft version, temporarily remove Iceberg along with the UI mods that depend on it (such as Item Highlighter, Legendary Tooltips, or Equipment Compare).

Check your own logDownload iceberg on 9Minecraft