Please check the pinned issues "Known Forge Issues" and "Known Fabric/Quilt Issues" before posting a new report

Loader
Forge or Fabric? (Forge)

Versions

• Minecraft Version (1.18.2)
• Mod Loader Version (Forge 40.2.4, Curseforge Launcher v0.249.3.17472)
• Origins Version (origins-forge-1.18.2-1.5.0.2-all.jar)
• Origins++ Version (origins-plus-plus-2.0-forge.jar)
• Pehkui Version (Pehkui-3.8.0+1.18.2-forge.jar)

Origin
What origin is causing the problem? N/A

Power
What power is causing the problem? N/A

Notes
When running the mod, there is a seemingly chance the game will fail to load into a world, whether its a new world or an existing one doesnt matter. Only the five mods required (Caelus API, Origins, Origins++, Pehkui, and XL Packets) are loaded. Running game in singleplayer. All other mods work fine.

The error is as follows:

"Failed to connect to the server"
"Internal Exception: java.util.ConcurrentModificationException"

I dont know how to fix this. Should I try a different forge version?

also i got this crash when exiting the world when it did actually load:
The game crashed whilst exception in server tick loop
Error: java.lang.NullPointerException: Cannot invoke "net.minecraft.server.MinecraftServer.m_129921_()" because "server" is null

crash-2024-04-06_00.39.33-server.txt