Mod conflicts

Applied Energistics 2 TickHandler NullPointerException on Chunk Unload or World Tick

What the log looks like

java\.lang\.NullPointerException\s+at appeng\.hooks\.TickHandler\.onUnloadChunk
java\.lang\.NullPointerException\s+at appeng\.hooks\.ticking\.TickHandler\.readyTiles

How to fix it

  1. Back up your world folder before making changes, especially if your log shows 'Failed to save chunk' errors.
  2. Update Applied Energistics 2 to the latest available version for your Minecraft release (such as AE2 8.4.7 for Minecraft 1.16.5) to fix the onUnloadChunk bug.
  3. Update Minecraft Forge to a stable recommended build (for example, 36.2.x instead of early 36.0.x builds on 1.16.5).
  4. If your crash log includes org.spongepowered.forge.launch.event.SpongeEventBus and spams TickHandler.readyTiles, update SpongeForge to the latest release build for your Minecraft version, or run the server on standard Forge without SpongeForge if the conflict persists.
LoadersForge, Server
SeverityBreaks something
CategoryMod conflicts

Check your own log

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