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Crash with Powah BatteryItem when using Connector Extras Energy Bridge #71

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Description

@lilaktt

Describe the bug

When playing with Forge 1.20.1 + Powah 5.0.11 + ConnectorExtras (Energy Bridge 1.11.2+1.20.1) the game crashes due to a ConcurrentModificationException. It happens when Powah tries to charge items in the player’s inventory while ConnectorExtras Energy Bridge is active. Crash Log (excerpt):

Steps to reproduce

Install Forge 1.20.1.

Add mods: Powah 5.0.11, Connector, ConnectorExtras (Energy Bridge).

Launch the game, give yourself a Powah Battery.

Crash occurs shortly after the battery is in inventory

Logs

java.util.ConcurrentModificationException at java.util.HashMap.computeIfAbsent(HashMap.java:1221) at dev.su5ed.sinytra.connectorextras.energybridge.EnergyBridgeSetup$2.getCapability(EnergyBridgeSetup.java:82) at owmii.powah.forge.ForgeEnvHandler.transferSlotList(ForgeEnvHandler.java:406) at owmii.powah.forge.ForgeEnvHandler.chargeItemsInPlayerInv(ForgeEnvHandler.java:377) at owmii.powah.item.BatteryItem.inventoryTick(BatteryItem.java:33)

Additional context

versions:

Minecraft: 1.20.1

Forge: 47.4.0

Powah: 5.0.11

Connector: (latest for 1.20.1)

ConnectorExtras: 1.11.2+1.20.1

Activity

  1. self-assigned this
    on Dec 7, 2025
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