I was changing the entity culling settings. I toggled the settings off, applied, and clicked undo, all in fairly quick succession, and then the game crashed.

Crash report: https://pastebin.com/2seXUcRn

Versions

• Minecraft: 1.20.1
• Forge: 47.3.11
• Embeddium++: 1.2.13
• Oculus: 1.7.0