Sodium Crash: Tried to mark light data as ready for chunk before it loaded

What it looks like in the log

java.lang.IllegalStateException: Tried to mark light data as ready for chunk [x, y] but it hasn't been loaded yet`

How to fix it

1. Update Sodium to the latest version available for your Minecraft release (0.4.3 or newer), where out-of-order chunk light packets are handled safely instead of crashing the game.
2. If you use Sodium add-ons or shader mods such as Iris, Sodium Extra, or Reese's Sodium Options, update them alongside Sodium so their versions remain compatible.
3. Remove or update lighting and protocol mods like Phosphor, Starlight, or ViaBackwards/ViaFabric, as they frequently trigger out-of-order light updates when teleporting or respawning.
4. If you are locked to an older Minecraft 1.18.2 or 1.19 modpack version that cannot update Sodium, avoid using spectator teleportation to distant players on multiplayer servers.

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