[1.20.1] Rendering Exception Crash

[Apollonu]

When saving a world, my game had a crash and it is from FastQuit

[21Jan2026 18:44:10.070] [Render thread/ERROR] [net.minecraft.client.Minecraft/FATAL]: Reported exception thrown!
net.minecraft.ReportedException: Rendering screen
	at net.minecraft.client.renderer.GameRenderer.m_109093_(GameRenderer.java:978) ~[client-1.20.1-20230612.114412-srg.jar%23777!/:?]
	at net.minecraft.client.Minecraft.m_91383_(Minecraft.java:1146) ~[client-1.20.1-20230612.114412-srg.jar%23777!/:?]
	at net.minecraft.client.Minecraft.m_91374_(Minecraft.java:718) ~[client-1.20.1-20230612.114412-srg.jar%23777!/:?]
	at java.lang.Thread.run(Thread.java:1474) ~[?:?]
Caused by: java.util.ConcurrentModificationException
	at java.util.HashMap$KeySpliterator.tryAdvance(HashMap.java:1739) ~[?:?]
	at java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:147) ~[?:?]
	at java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:588) ~[?:?]
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:574) ~[?:?]
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:560) ~[?:?]
	at java.util.stream.FindOps$FindOp.evaluateSequential(FindOps.java:150) ~[?:?]
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:265) ~[?:?]
	at java.util.stream.ReferencePipeline.findFirst(ReferencePipeline.java:683) ~[?:?]
	at com.kingcontaria.fastquit.FastQuit.getSavingWorld(FastQuit.java:172) ~[Fastquit-3.0.1+1.20.1forge.jar%23585!/:3.0.1+1.20.1forge]
	at net.minecraft.client.gui.screens.worldselection.WorldSelectionList$WorldListEntry.handler$eko000$fastquit$renderSavingTimeOnWorldList(WorldSelectionList.java:1719) ~[client-1.20.1-20230612.114412-srg.jar%23777!/:?]
	at net.minecraft.client.gui.screens.worldselection.WorldSelectionList$WorldListEntry.m_6311_(WorldSelectionList.java:359) ~[client-1.20.1-20230612.114412-srg.jar%23777!/:?]
	at net.minecraft.client.gui.components.AbstractSelectionList.m_238964_(AbstractSelectionList.java:444) ~[client-1.20.1-20230612.114412-srg.jar%23777!/:?]
	at net.minecraft.client.gui.components.AbstractSelectionList.m_239227_(AbstractSelectionList.java:430) ~[client-1.20.1-20230612.114412-srg.jar%23777!/:?]
	at net.minecraft.client.gui.components.AbstractSelectionList.m_88315_(AbstractSelectionList.java:210) ~[client-1.20.1-20230612.114412-srg.jar%23777!/:?]
	at net.minecraft.client.gui.screens.worldselection.WorldSelectionList.m_88315_(WorldSelectionList.java:135) ~[client-1.20.1-20230612.114412-srg.jar%23777!/:?]
	at net.minecraft.client.gui.screens.worldselection.SelectWorldScreen.m_88315_(SelectWorldScreen.java:113) ~[client-1.20.1-20230612.114412-srg.jar%23777!/:?]
	at net.minecraft.client.gui.screens.Screen.m_280264_(Screen.java:109) ~[client-1.20.1-20230612.114412-srg.jar%23777!/:?]
	at net.minecraftforge.client.ForgeHooksClient.drawScreenInternal(ForgeHooksClient.java:428) ~[forge-1.20.1-47.4.13-universal.jar%23782!/:?]
	at net.minecraftforge.client.ForgeHooksClient.drawScreen(ForgeHooksClient.java:421) ~[forge-1.20.1-47.4.13-universal.jar%23782!/:?]
	at net.minecraft.client.renderer.GameRenderer.m_109093_(GameRenderer.java:965) ~[client-1.20.1-20230612.114412-srg.jar%23777!/:?]
	... 3 more

debug.log
latest.log