[1.20.1] Crash Using World Preview

[Apollonu]

What happened?

I was messing with the menus on world preview and I encountered a crash.

[22Jan2026 13:31:34.522] [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%23787!/:?]
	at net.minecraft.client.Minecraft.m_91383_(Minecraft.java:1146) ~[client-1.20.1-20230612.114412-srg.jar%23787!/:?]
	at net.minecraft.client.Minecraft.m_91374_(Minecraft.java:718) ~[client-1.20.1-20230612.114412-srg.jar%23787!/:?]
	at java.lang.Thread.run(Thread.java:1474) ~[?:?]
Caused by: java.lang.NullPointerException: Cannot enter synchronized block because "storage" is null
	at caeruleusTait.world.preview.client.gui.widgets.PreviewDisplay.generateRenderData(PreviewDisplay.java:380) ~[world_preview-forge-1.20.1-1.3.1.jar%23773!/:1.3.1]
	at caeruleusTait.world.preview.client.gui.widgets.PreviewDisplay.m_87963_(PreviewDisplay.java:252) ~[world_preview-forge-1.20.1-1.3.1.jar%23773!/:1.3.1]
	at net.minecraft.client.gui.components.AbstractWidget.m_88315_(AbstractWidget.java:70) ~[client-1.20.1-20230612.114412-srg.jar%23787!/:?]
	at net.minecraft.client.gui.screens.Screen.m_88315_(Screen.java:119) ~[client-1.20.1-20230612.114412-srg.jar%23787!/:?]
	at net.minecraft.client.gui.screens.worldselection.CreateWorldScreen.m_88315_(CreateWorldScreen.java:266) ~[client-1.20.1-20230612.114412-srg.jar%23787!/:?]
	at net.minecraft.client.gui.screens.Screen.m_280264_(Screen.java:109) ~[client-1.20.1-20230612.114412-srg.jar%23787!/:?]
	at net.minecraftforge.client.ForgeHooksClient.drawScreenInternal(ForgeHooksClient.java:428) ~[forge-1.20.1-47.4.13-universal.jar%23792!/:?]
	at net.minecraftforge.client.ForgeHooksClient.drawScreen(ForgeHooksClient.java:421) ~[forge-1.20.1-47.4.13-universal.jar%23792!/:?]
	at net.minecraft.client.renderer.GameRenderer.m_109093_(GameRenderer.java:965) ~[client-1.20.1-20230612.114412-srg.jar%23787!/:?]
	... 3 more

Minecraft Version

1.20.1

Modloader (Fabric/Forge)

Forge

World-Preview Version

1.3.1

Minecraft Logs

debug.log
latest.log

Additional Information

No response